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Finding the Fourth Proportional to 497.40, 742.94 and 424.50

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Solution

The fourth proportional to 497.40, 742.94 and 424.50 is: 634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.40 : 742.94 = 424.50 : x
  2. Step 2: Convert to fraction form
    497.40/742.94 = 424.50/x
  3. Step 3: Cross multiply
    497.40x = 742.94 × 424.50
  4. Step 4: Simplify right side
    497.40x = 315,375.91
  5. Step 5: Solve for x
    x = 315,375.91/497.40
  6. Step 6: Final answer
    x = 634.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.