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Finding the Fourth Proportional to 488.06, 731.82 and 213.83

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Solution

The fourth proportional to 488.06, 731.82 and 213.83 is: 320.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.06 : 731.82 = 213.83 : x
  2. Step 2: Convert to fraction form
    488.06/731.82 = 213.83/x
  3. Step 3: Cross multiply
    488.06x = 731.82 × 213.83
  4. Step 4: Simplify right side
    488.06x = 156,482.78
  5. Step 5: Solve for x
    x = 156,482.78/488.06
  6. Step 6: Final answer
    x = 320.63

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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.