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Finding the Fourth Proportional to 115.84, 174.85 and 115.84

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Solution

The fourth proportional to 115.84, 174.85 and 115.84 is: 174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.84 : 174.85 = 115.84 : x
  2. Step 2: Convert to fraction form
    115.84/174.85 = 115.84/x
  3. Step 3: Cross multiply
    115.84x = 174.85 × 115.84
  4. Step 4: Simplify right side
    115.84x = 20,254.62
  5. Step 5: Solve for x
    x = 20,254.62/115.84
  6. Step 6: Final answer
    x = 174.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.