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Finding the Fourth Proportional to 147.31, 202.83 and 125.13

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Solution

The fourth proportional to 147.31, 202.83 and 125.13 is: 172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.31 : 202.83 = 125.13 : x
  2. Step 2: Convert to fraction form
    147.31/202.83 = 125.13/x
  3. Step 3: Cross multiply
    147.31x = 202.83 × 125.13
  4. Step 4: Simplify right side
    147.31x = 25,380.41
  5. Step 5: Solve for x
    x = 25,380.41/147.31
  6. Step 6: Final answer
    x = 172.30

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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.