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Finding the Fourth Proportional to 229.39, 316.28 and 159.51

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Solution

The fourth proportional to 229.39, 316.28 and 159.51 is: 219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.39 : 316.28 = 159.51 : x
  2. Step 2: Convert to fraction form
    229.39/316.28 = 159.51/x
  3. Step 3: Cross multiply
    229.39x = 316.28 × 159.51
  4. Step 4: Simplify right side
    229.39x = 50,449.82
  5. Step 5: Solve for x
    x = 50,449.82/229.39
  6. Step 6: Final answer
    x = 219.93

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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.