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Finding the Fourth Proportional to 479.34, 717.92 and 375.78

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Solution

The fourth proportional to 479.34, 717.92 and 375.78 is: 562.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.34 : 717.92 = 375.78 : x
  2. Step 2: Convert to fraction form
    479.34/717.92 = 375.78/x
  3. Step 3: Cross multiply
    479.34x = 717.92 × 375.78
  4. Step 4: Simplify right side
    479.34x = 269,779.98
  5. Step 5: Solve for x
    x = 269,779.98/479.34
  6. Step 6: Final answer
    x = 562.82

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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.