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Finding the Fourth Proportional to 169.01, 253.29 and 71.43

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Solution

The fourth proportional to 169.01, 253.29 and 71.43 is: 107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.01 : 253.29 = 71.43 : x
  2. Step 2: Convert to fraction form
    169.01/253.29 = 71.43/x
  3. Step 3: Cross multiply
    169.01x = 253.29 × 71.43
  4. Step 4: Simplify right side
    169.01x = 18,092.24
  5. Step 5: Solve for x
    x = 18,092.24/169.01
  6. Step 6: Final answer
    x = 107.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.