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Finding the Fourth Proportional to 814.22, 1,123.55 and 460.17

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Solution

The fourth proportional to 814.22, 1,123.55 and 460.17 is: 634.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.22 : 1,123.55 = 460.17 : x
  2. Step 2: Convert to fraction form
    814.22/1,123.55 = 460.17/x
  3. Step 3: Cross multiply
    814.22x = 1,123.55 × 460.17
  4. Step 4: Simplify right side
    814.22x = 517,021.19
  5. Step 5: Solve for x
    x = 517,021.19/814.22
  6. Step 6: Final answer
    x = 634.99

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Double scale
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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.