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Finding the Fourth Proportional to 229.04, 315.84 and 159.18

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Solution

The fourth proportional to 229.04, 315.84 and 159.18 is: 219.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.04 : 315.84 = 159.18 : x
  2. Step 2: Convert to fraction form
    229.04/315.84 = 159.18/x
  3. Step 3: Cross multiply
    229.04x = 315.84 × 159.18
  4. Step 4: Simplify right side
    229.04x = 50,275.41
  5. Step 5: Solve for x
    x = 50,275.41/229.04
  6. Step 6: Final answer
    x = 219.50

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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.