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Finding the Fourth Proportional to 672.18, 927.72 and 506.13

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Solution

The fourth proportional to 672.18, 927.72 and 506.13 is: 698.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.18 : 927.72 = 506.13 : x
  2. Step 2: Convert to fraction form
    672.18/927.72 = 506.13/x
  3. Step 3: Cross multiply
    672.18x = 927.72 × 506.13
  4. Step 4: Simplify right side
    672.18x = 469,546.92
  5. Step 5: Solve for x
    x = 469,546.92/672.18
  6. Step 6: Final answer
    x = 698.54

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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.