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Finding the Fourth Proportional to 696.03, 959.19 and 499.20

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Solution

The fourth proportional to 696.03, 959.19 and 499.20 is: 687.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.03 : 959.19 = 499.20 : x
  2. Step 2: Convert to fraction form
    696.03/959.19 = 499.20/x
  3. Step 3: Cross multiply
    696.03x = 959.19 × 499.20
  4. Step 4: Simplify right side
    696.03x = 478,827.65
  5. Step 5: Solve for x
    x = 478,827.65/696.03
  6. Step 6: Final answer
    x = 687.94

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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.