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Finding the Fourth Proportional to 345.68, 476.89 and 229.04

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Solution

The fourth proportional to 345.68, 476.89 and 229.04 is: 315.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.68 : 476.89 = 229.04 : x
  2. Step 2: Convert to fraction form
    345.68/476.89 = 229.04/x
  3. Step 3: Cross multiply
    345.68x = 476.89 × 229.04
  4. Step 4: Simplify right side
    345.68x = 109,223.93
  5. Step 5: Solve for x
    x = 109,223.93/345.68
  6. Step 6: Final answer
    x = 315.97

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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.