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Finding the Fourth Proportional to 147.34, 202.72 and 143.88

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Solution

The fourth proportional to 147.34, 202.72 and 143.88 is: 197.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.34 : 202.72 = 143.88 : x
  2. Step 2: Convert to fraction form
    147.34/202.72 = 143.88/x
  3. Step 3: Cross multiply
    147.34x = 202.72 × 143.88
  4. Step 4: Simplify right side
    147.34x = 29,167.18
  5. Step 5: Solve for x
    x = 29,167.18/147.34
  6. Step 6: Final answer
    x = 197.96

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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.