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Finding the Fourth Proportional to 462.43, 639.05 and 373.74

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Solution

The fourth proportional to 462.43, 639.05 and 373.74 is: 516.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.43 : 639.05 = 373.74 : x
  2. Step 2: Convert to fraction form
    462.43/639.05 = 373.74/x
  3. Step 3: Cross multiply
    462.43x = 639.05 × 373.74
  4. Step 4: Simplify right side
    462.43x = 238,838.55
  5. Step 5: Solve for x
    x = 238,838.55/462.43
  6. Step 6: Final answer
    x = 516.49

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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.