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Finding the Fourth Proportional to 70.29, 97.11 and 58.14

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Solution

The fourth proportional to 70.29, 97.11 and 58.14 is: 80.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.29 : 97.11 = 58.14 : x
  2. Step 2: Convert to fraction form
    70.29/97.11 = 58.14/x
  3. Step 3: Cross multiply
    70.29x = 97.11 × 58.14
  4. Step 4: Simplify right side
    70.29x = 5,645.98
  5. Step 5: Solve for x
    x = 5,645.98/70.29
  6. Step 6: Final answer
    x = 80.32

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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.