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Finding the Fourth Proportional to 147.23, 221.65 and 134.47

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Solution

The fourth proportional to 147.23, 221.65 and 134.47 is: 202.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.23 : 221.65 = 134.47 : x
  2. Step 2: Convert to fraction form
    147.23/221.65 = 134.47/x
  3. Step 3: Cross multiply
    147.23x = 221.65 × 134.47
  4. Step 4: Simplify right side
    147.23x = 29,805.28
  5. Step 5: Solve for x
    x = 29,805.28/147.23
  6. Step 6: Final answer
    x = 202.44

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.