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Finding the Fourth Proportional to 814.89, 1,124.26 and 460.76

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Solution

The fourth proportional to 814.89, 1,124.26 and 460.76 is: 635.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.89 : 1,124.26 = 460.76 : x
  2. Step 2: Convert to fraction form
    814.89/1,124.26 = 460.76/x
  3. Step 3: Cross multiply
    814.89x = 1,124.26 × 460.76
  4. Step 4: Simplify right side
    814.89x = 518,014.04
  5. Step 5: Solve for x
    x = 518,014.04/814.89
  6. Step 6: Final answer
    x = 635.69

Related Problems

Find fourth proportional to 407.45, 562.13 and 230.38
Half scale
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Double scale
Find fourth proportional to 815.89, 1,125.64 and 461.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.