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Finding the Fourth Proportional to 672.42, 927.95 and 377.72

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Solution

The fourth proportional to 672.42, 927.95 and 377.72 is: 521.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.42 : 927.95 = 377.72 : x
  2. Step 2: Convert to fraction form
    672.42/927.95 = 377.72/x
  3. Step 3: Cross multiply
    672.42x = 927.95 × 377.72
  4. Step 4: Simplify right side
    672.42x = 350,505.27
  5. Step 5: Solve for x
    x = 350,505.27/672.42
  6. Step 6: Final answer
    x = 521.26

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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.