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Finding the Fourth Proportional to 332.60, 500.10 and 279.80

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Solution

The fourth proportional to 332.60, 500.10 and 279.80 is: 420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.60 : 500.10 = 279.80 : x
  2. Step 2: Convert to fraction form
    332.60/500.10 = 279.80/x
  3. Step 3: Cross multiply
    332.60x = 500.10 × 279.80
  4. Step 4: Simplify right side
    332.60x = 139,927.98
  5. Step 5: Solve for x
    x = 139,927.98/332.60
  6. Step 6: Final answer
    x = 420.71

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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.