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Finding the Fourth Proportional to 188.62, 282.68 and 97.13

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Solution

The fourth proportional to 188.62, 282.68 and 97.13 is: 145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.62 : 282.68 = 97.13 : x
  2. Step 2: Convert to fraction form
    188.62/282.68 = 97.13/x
  3. Step 3: Cross multiply
    188.62x = 282.68 × 97.13
  4. Step 4: Simplify right side
    188.62x = 27,454.81
  5. Step 5: Solve for x
    x = 27,454.81/188.62
  6. Step 6: Final answer
    x = 145.56

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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.