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Finding the Fourth Proportional to 147.03, 202.67 and 115.90

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Solution

The fourth proportional to 147.03, 202.67 and 115.90 is: 159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.03 : 202.67 = 115.90 : x
  2. Step 2: Convert to fraction form
    147.03/202.67 = 115.90/x
  3. Step 3: Cross multiply
    147.03x = 202.67 × 115.90
  4. Step 4: Simplify right side
    147.03x = 23,487.86
  5. Step 5: Solve for x
    x = 23,487.86/147.03
  6. Step 6: Final answer
    x = 159.75

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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.