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Finding the Fourth Proportional to 54.32, 75.05 and 48.17

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Solution

The fourth proportional to 54.32, 75.05 and 48.17 is: 66.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.32 : 75.05 = 48.17 : x
  2. Step 2: Convert to fraction form
    54.32/75.05 = 48.17/x
  3. Step 3: Cross multiply
    54.32x = 75.05 × 48.17
  4. Step 4: Simplify right side
    54.32x = 3,614.54
  5. Step 5: Solve for x
    x = 3,614.54/54.32
  6. Step 6: Final answer
    x = 66.55

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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.