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Finding the Fourth Proportional to 696, 960.24 and 499.80

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Solution

The fourth proportional to 696, 960.24 and 499.80 is: 689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    696 : 960.24 = 499.80 : x
  2. Step 2: Convert to fraction form
    696/960.24 = 499.80/x
  3. Step 3: Cross multiply
    696x = 960.24 × 499.80
  4. Step 4: Simplify right side
    696x = 479,927.95
  5. Step 5: Solve for x
    x = 479,927.95/696
  6. Step 6: Final answer
    x = 689.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.