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Finding the Fourth Proportional to 540.29, 814.38 and 494.12

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Solution

The fourth proportional to 540.29, 814.38 and 494.12 is: 744.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.29 : 814.38 = 494.12 : x
  2. Step 2: Convert to fraction form
    540.29/814.38 = 494.12/x
  3. Step 3: Cross multiply
    540.29x = 814.38 × 494.12
  4. Step 4: Simplify right side
    540.29x = 402,397.37
  5. Step 5: Solve for x
    x = 402,397.37/540.29
  6. Step 6: Final answer
    x = 744.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.