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Finding the Fourth Proportional to 97.88, 135.08 and 58.52

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Solution

The fourth proportional to 97.88, 135.08 and 58.52 is: 80.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.88 : 135.08 = 58.52 : x
  2. Step 2: Convert to fraction form
    97.88/135.08 = 58.52/x
  3. Step 3: Cross multiply
    97.88x = 135.08 × 58.52
  4. Step 4: Simplify right side
    97.88x = 7,904.88
  5. Step 5: Solve for x
    x = 7,904.88/97.88
  6. Step 6: Final answer
    x = 80.76

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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.