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Finding the Fourth Proportional to 672.80, 927.36 and 540.32

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Solution

The fourth proportional to 672.80, 927.36 and 540.32 is: 744.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.80 : 927.36 = 540.32 : x
  2. Step 2: Convert to fraction form
    672.80/927.36 = 540.32/x
  3. Step 3: Cross multiply
    672.80x = 927.36 × 540.32
  4. Step 4: Simplify right side
    672.80x = 501,071.16
  5. Step 5: Solve for x
    x = 501,071.16/672.80
  6. Step 6: Final answer
    x = 744.75

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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.