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Finding the Fourth Proportional to 147.28, 203.20 and 95.52

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Solution

The fourth proportional to 147.28, 203.20 and 95.52 is: 131.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.28 : 203.20 = 95.52 : x
  2. Step 2: Convert to fraction form
    147.28/203.20 = 95.52/x
  3. Step 3: Cross multiply
    147.28x = 203.20 × 95.52
  4. Step 4: Simplify right side
    147.28x = 19,409.66
  5. Step 5: Solve for x
    x = 19,409.66/147.28
  6. Step 6: Final answer
    x = 131.79

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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.