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Finding the Fourth Proportional to 65.32, 98.44 and 58.91

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Solution

The fourth proportional to 65.32, 98.44 and 58.91 is: 88.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.32 : 98.44 = 58.91 : x
  2. Step 2: Convert to fraction form
    65.32/98.44 = 58.91/x
  3. Step 3: Cross multiply
    65.32x = 98.44 × 58.91
  4. Step 4: Simplify right side
    65.32x = 5,799.10
  5. Step 5: Solve for x
    x = 5,799.10/65.32
  6. Step 6: Final answer
    x = 88.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.