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Finding the Fourth Proportional to 672.24, 927.92 and 462.24

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Solution

The fourth proportional to 672.24, 927.92 and 462.24 is: 638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.24 : 927.92 = 462.24 : x
  2. Step 2: Convert to fraction form
    672.24/927.92 = 462.24/x
  3. Step 3: Cross multiply
    672.24x = 927.92 × 462.24
  4. Step 4: Simplify right side
    672.24x = 428,921.74
  5. Step 5: Solve for x
    x = 428,921.74/672.24
  6. Step 6: Final answer
    x = 638.05

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1.5x scale

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.