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Finding the Fourth Proportional to 488.37, 731.64 and 379.65

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Solution

The fourth proportional to 488.37, 731.64 and 379.65 is: 568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.37 : 731.64 = 379.65 : x
  2. Step 2: Convert to fraction form
    488.37/731.64 = 379.65/x
  3. Step 3: Cross multiply
    488.37x = 731.64 × 379.65
  4. Step 4: Simplify right side
    488.37x = 277,767.13
  5. Step 5: Solve for x
    x = 277,767.13/488.37
  6. Step 6: Final answer
    x = 568.76

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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.