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Finding the Fourth Proportional to 462.32, 693.27 and 288.72

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Solution

The fourth proportional to 462.32, 693.27 and 288.72 is: 432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.32 : 693.27 = 288.72 : x
  2. Step 2: Convert to fraction form
    462.32/693.27 = 288.72/x
  3. Step 3: Cross multiply
    462.32x = 693.27 × 288.72
  4. Step 4: Simplify right side
    462.32x = 200,160.91
  5. Step 5: Solve for x
    x = 200,160.91/462.32
  6. Step 6: Final answer
    x = 432.95

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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.