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Finding the Fourth Proportional to 175.41, 242.05 and 97.78

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Solution

The fourth proportional to 175.41, 242.05 and 97.78 is: 134.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.41 : 242.05 = 97.78 : x
  2. Step 2: Convert to fraction form
    175.41/242.05 = 97.78/x
  3. Step 3: Cross multiply
    175.41x = 242.05 × 97.78
  4. Step 4: Simplify right side
    175.41x = 23,667.65
  5. Step 5: Solve for x
    x = 23,667.65/175.41
  6. Step 6: Final answer
    x = 134.93

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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.