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Finding the Fourth Proportional to 175.81, 242.10 and 157.38

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Solution

The fourth proportional to 175.81, 242.10 and 157.38 is: 216.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.81 : 242.10 = 157.38 : x
  2. Step 2: Convert to fraction form
    175.81/242.10 = 157.38/x
  3. Step 3: Cross multiply
    175.81x = 242.10 × 157.38
  4. Step 4: Simplify right side
    175.81x = 38,101.70
  5. Step 5: Solve for x
    x = 38,101.70/175.81
  6. Step 6: Final answer
    x = 216.72

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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.