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Finding the Fourth Proportional to 672.32, 927.43 and 451.42

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Solution

The fourth proportional to 672.32, 927.43 and 451.42 is: 622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.32 : 927.43 = 451.42 : x
  2. Step 2: Convert to fraction form
    672.32/927.43 = 451.42/x
  3. Step 3: Cross multiply
    672.32x = 927.43 × 451.42
  4. Step 4: Simplify right side
    672.32x = 418,655.81
  5. Step 5: Solve for x
    x = 418,655.81/672.32
  6. Step 6: Final answer
    x = 622.70

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Half scale
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Double scale
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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.