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Finding the Fourth Proportional to 671.92, 927.18 and 377.12

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Solution

The fourth proportional to 671.92, 927.18 and 377.12 is: 520.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.92 : 927.18 = 377.12 : x
  2. Step 2: Convert to fraction form
    671.92/927.18 = 377.12/x
  3. Step 3: Cross multiply
    671.92x = 927.18 × 377.12
  4. Step 4: Simplify right side
    671.92x = 349,658.12
  5. Step 5: Solve for x
    x = 349,658.12/671.92
  6. Step 6: Final answer
    x = 520.39

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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.