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Finding the Fourth Proportional to 130.69, 195.17 and 126.28

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Solution

The fourth proportional to 130.69, 195.17 and 126.28 is: 188.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.69 : 195.17 = 126.28 : x
  2. Step 2: Convert to fraction form
    130.69/195.17 = 126.28/x
  3. Step 3: Cross multiply
    130.69x = 195.17 × 126.28
  4. Step 4: Simplify right side
    130.69x = 24,646.07
  5. Step 5: Solve for x
    x = 24,646.07/130.69
  6. Step 6: Final answer
    x = 188.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.