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Finding the Fourth Proportional to 134.47, 201.48 and 130.78

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Solution

The fourth proportional to 134.47, 201.48 and 130.78 is: 195.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.47 : 201.48 = 130.78 : x
  2. Step 2: Convert to fraction form
    134.47/201.48 = 130.78/x
  3. Step 3: Cross multiply
    134.47x = 201.48 × 130.78
  4. Step 4: Simplify right side
    134.47x = 26,349.55
  5. Step 5: Solve for x
    x = 26,349.55/134.47
  6. Step 6: Final answer
    x = 195.95

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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.