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Finding the Fourth Proportional to 424.17, 631.43 and 404.29

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Solution

The fourth proportional to 424.17, 631.43 and 404.29 is: 601.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.17 : 631.43 = 404.29 : x
  2. Step 2: Convert to fraction form
    424.17/631.43 = 404.29/x
  3. Step 3: Cross multiply
    424.17x = 631.43 × 404.29
  4. Step 4: Simplify right side
    424.17x = 255,281.85
  5. Step 5: Solve for x
    x = 255,281.85/424.17
  6. Step 6: Final answer
    x = 601.84

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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.