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Finding the Fourth Proportional to 814.75, 1,124.37 and 460.74

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Solution

The fourth proportional to 814.75, 1,124.37 and 460.74 is: 635.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.75 : 1,124.37 = 460.74 : x
  2. Step 2: Convert to fraction form
    814.75/1,124.37 = 460.74/x
  3. Step 3: Cross multiply
    814.75x = 1,124.37 × 460.74
  4. Step 4: Simplify right side
    814.75x = 518,042.23
  5. Step 5: Solve for x
    x = 518,042.23/814.75
  6. Step 6: Final answer
    x = 635.83

Related Problems

Find fourth proportional to 407.38, 562.19 and 230.37
Half scale
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Double scale
Find fourth proportional to 815.75, 1,125.75 and 461.74
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.