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Finding the Fourth Proportional to 475.88, 713.88 and 215.83

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Solution

The fourth proportional to 475.88, 713.88 and 215.83 is: 323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.88 : 713.88 = 215.83 : x
  2. Step 2: Convert to fraction form
    475.88/713.88 = 215.83/x
  3. Step 3: Cross multiply
    475.88x = 713.88 × 215.83
  4. Step 4: Simplify right side
    475.88x = 154,077.61
  5. Step 5: Solve for x
    x = 154,077.61/475.88
  6. Step 6: Final answer
    x = 323.78

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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.