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Finding the Fourth Proportional to 672.10, 927.56 and 377.40

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Solution

The fourth proportional to 672.10, 927.56 and 377.40 is: 520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.10 : 927.56 = 377.40 : x
  2. Step 2: Convert to fraction form
    672.10/927.56 = 377.40/x
  3. Step 3: Cross multiply
    672.10x = 927.56 × 377.40
  4. Step 4: Simplify right side
    672.10x = 350,061.14
  5. Step 5: Solve for x
    x = 350,061.14/672.10
  6. Step 6: Final answer
    x = 520.85

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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.