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Finding the Fourth Proportional to 229.36, 344.40 and 157.18

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Solution

The fourth proportional to 229.36, 344.40 and 157.18 is: 236.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.36 : 344.40 = 157.18 : x
  2. Step 2: Convert to fraction form
    229.36/344.40 = 157.18/x
  3. Step 3: Cross multiply
    229.36x = 344.40 × 157.18
  4. Step 4: Simplify right side
    229.36x = 54,132.79
  5. Step 5: Solve for x
    x = 54,132.79/229.36
  6. Step 6: Final answer
    x = 236.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.