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Finding the Fourth Proportional to 376.72, 562.26 and 321.52

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Solution

The fourth proportional to 376.72, 562.26 and 321.52 is: 479.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.72 : 562.26 = 321.52 : x
  2. Step 2: Convert to fraction form
    376.72/562.26 = 321.52/x
  3. Step 3: Cross multiply
    376.72x = 562.26 × 321.52
  4. Step 4: Simplify right side
    376.72x = 180,777.84
  5. Step 5: Solve for x
    x = 180,777.84/376.72
  6. Step 6: Final answer
    x = 479.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.