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Finding the Fourth Proportional to 170.53, 235.02 and 115.11

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Solution

The fourth proportional to 170.53, 235.02 and 115.11 is: 158.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.53 : 235.02 = 115.11 : x
  2. Step 2: Convert to fraction form
    170.53/235.02 = 115.11/x
  3. Step 3: Cross multiply
    170.53x = 235.02 × 115.11
  4. Step 4: Simplify right side
    170.53x = 27,053.15
  5. Step 5: Solve for x
    x = 27,053.15/170.53
  6. Step 6: Final answer
    x = 158.64

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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.