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Finding the Fourth Proportional to 672.18, 927.63 and 377.47

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Solution

The fourth proportional to 672.18, 927.63 and 377.47 is: 520.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.18 : 927.63 = 377.47 : x
  2. Step 2: Convert to fraction form
    672.18/927.63 = 377.47/x
  3. Step 3: Cross multiply
    672.18x = 927.63 × 377.47
  4. Step 4: Simplify right side
    672.18x = 350,150.61
  5. Step 5: Solve for x
    x = 350,150.61/672.18
  6. Step 6: Final answer
    x = 520.92

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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.