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Finding the Fourth Proportional to 175.80, 242.55 and 102.13

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Solution

The fourth proportional to 175.80, 242.55 and 102.13 is: 140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.80 : 242.55 = 102.13 : x
  2. Step 2: Convert to fraction form
    175.80/242.55 = 102.13/x
  3. Step 3: Cross multiply
    175.80x = 242.55 × 102.13
  4. Step 4: Simplify right side
    175.80x = 24,771.63
  5. Step 5: Solve for x
    x = 24,771.63/175.80
  6. Step 6: Final answer
    x = 140.91

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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.