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Finding the Fourth Proportional to 65.98, 98.49 and 60.57

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Solution

The fourth proportional to 65.98, 98.49 and 60.57 is: 90.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.98 : 98.49 = 60.57 : x
  2. Step 2: Convert to fraction form
    65.98/98.49 = 60.57/x
  3. Step 3: Cross multiply
    65.98x = 98.49 × 60.57
  4. Step 4: Simplify right side
    65.98x = 5,965.54
  5. Step 5: Solve for x
    x = 5,965.54/65.98
  6. Step 6: Final answer
    x = 90.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.