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Finding the Fourth Proportional to 412.17, 618.33 and 229.17

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Solution

The fourth proportional to 412.17, 618.33 and 229.17 is: 343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.17 : 618.33 = 229.17 : x
  2. Step 2: Convert to fraction form
    412.17/618.33 = 229.17/x
  3. Step 3: Cross multiply
    412.17x = 618.33 × 229.17
  4. Step 4: Simplify right side
    412.17x = 141,702.69
  5. Step 5: Solve for x
    x = 141,702.69/412.17
  6. Step 6: Final answer
    x = 343.80

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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.