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Finding the Fourth Proportional to 176.05, 242.89 and 102.38

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Solution

The fourth proportional to 176.05, 242.89 and 102.38 is: 141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.05 : 242.89 = 102.38 : x
  2. Step 2: Convert to fraction form
    176.05/242.89 = 102.38/x
  3. Step 3: Cross multiply
    176.05x = 242.89 × 102.38
  4. Step 4: Simplify right side
    176.05x = 24,867.08
  5. Step 5: Solve for x
    x = 24,867.08/176.05
  6. Step 6: Final answer
    x = 141.25

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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.