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Finding the Fourth Proportional to 60.84, 83.52 and 54.54

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Solution

The fourth proportional to 60.84, 83.52 and 54.54 is: 74.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.84 : 83.52 = 54.54 : x
  2. Step 2: Convert to fraction form
    60.84/83.52 = 54.54/x
  3. Step 3: Cross multiply
    60.84x = 83.52 × 54.54
  4. Step 4: Simplify right side
    60.84x = 4,555.18
  5. Step 5: Solve for x
    x = 4,555.18/60.84
  6. Step 6: Final answer
    x = 74.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.