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Finding the Fourth Proportional to 494.31, 740.73 and 424.53

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Solution

The fourth proportional to 494.31, 740.73 and 424.53 is: 636.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.31 : 740.73 = 424.53 : x
  2. Step 2: Convert to fraction form
    494.31/740.73 = 424.53/x
  3. Step 3: Cross multiply
    494.31x = 740.73 × 424.53
  4. Step 4: Simplify right side
    494.31x = 314,462.11
  5. Step 5: Solve for x
    x = 314,462.11/494.31
  6. Step 6: Final answer
    x = 636.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.