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Finding the Fourth Proportional to 229.36, 342.76 and 156.48

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Solution

The fourth proportional to 229.36, 342.76 and 156.48 is: 233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.36 : 342.76 = 156.48 : x
  2. Step 2: Convert to fraction form
    229.36/342.76 = 156.48/x
  3. Step 3: Cross multiply
    229.36x = 342.76 × 156.48
  4. Step 4: Simplify right side
    229.36x = 53,635.08
  5. Step 5: Solve for x
    x = 53,635.08/229.36
  6. Step 6: Final answer
    x = 233.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.