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Finding the Fourth Proportional to 97.29, 146.00 and 66.47

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Solution

The fourth proportional to 97.29, 146.00 and 66.47 is: 99.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.29 : 146.00 = 66.47 : x
  2. Step 2: Convert to fraction form
    97.29/146.00 = 66.47/x
  3. Step 3: Cross multiply
    97.29x = 146.00 × 66.47
  4. Step 4: Simplify right side
    97.29x = 9,703.56
  5. Step 5: Solve for x
    x = 9,703.56/97.29
  6. Step 6: Final answer
    x = 99.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.