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Finding the Fourth Proportional to 171.30, 236.29 and 113.10

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Solution

The fourth proportional to 171.30, 236.29 and 113.10 is: 156.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.30 : 236.29 = 113.10 : x
  2. Step 2: Convert to fraction form
    171.30/236.29 = 113.10/x
  3. Step 3: Cross multiply
    171.30x = 236.29 × 113.10
  4. Step 4: Simplify right side
    171.30x = 26,724.40
  5. Step 5: Solve for x
    x = 26,724.40/171.30
  6. Step 6: Final answer
    x = 156.01

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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.