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Finding the Fourth Proportional to 115.50, 174.12 and 105.48

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Solution

The fourth proportional to 115.50, 174.12 and 105.48 is: 159.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.50 : 174.12 = 105.48 : x
  2. Step 2: Convert to fraction form
    115.50/174.12 = 105.48/x
  3. Step 3: Cross multiply
    115.50x = 174.12 × 105.48
  4. Step 4: Simplify right side
    115.50x = 18,366.18
  5. Step 5: Solve for x
    x = 18,366.18/115.50
  6. Step 6: Final answer
    x = 159.01

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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.