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Finding the Fourth Proportional to 330.62, 496.33 and 317.57

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Solution

The fourth proportional to 330.62, 496.33 and 317.57 is: 476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.62 : 496.33 = 317.57 : x
  2. Step 2: Convert to fraction form
    330.62/496.33 = 317.57/x
  3. Step 3: Cross multiply
    330.62x = 496.33 × 317.57
  4. Step 4: Simplify right side
    330.62x = 157,616.24
  5. Step 5: Solve for x
    x = 157,616.24/330.62
  6. Step 6: Final answer
    x = 476.74

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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.