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Finding the Fourth Proportional to 814.67, 1,124.21 and 460.55

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Solution

The fourth proportional to 814.67, 1,124.21 and 460.55 is: 635.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.67 : 1,124.21 = 460.55 : x
  2. Step 2: Convert to fraction form
    814.67/1,124.21 = 460.55/x
  3. Step 3: Cross multiply
    814.67x = 1,124.21 × 460.55
  4. Step 4: Simplify right side
    814.67x = 517,746.99
  5. Step 5: Solve for x
    x = 517,746.99/814.67
  6. Step 6: Final answer
    x = 635.53

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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.