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Finding the Fourth Proportional to 499.80, 749.76 and 283.56

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Solution

The fourth proportional to 499.80, 749.76 and 283.56 is: 425.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.80 : 749.76 = 283.56 : x
  2. Step 2: Convert to fraction form
    499.80/749.76 = 283.56/x
  3. Step 3: Cross multiply
    499.80x = 749.76 × 283.56
  4. Step 4: Simplify right side
    499.80x = 212,601.95
  5. Step 5: Solve for x
    x = 212,601.95/499.80
  6. Step 6: Final answer
    x = 425.37

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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.