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Finding the Fourth Proportional to 696.52, 1,040.99 and 550.72

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Solution

The fourth proportional to 696.52, 1,040.99 and 550.72 is: 823.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.52 : 1,040.99 = 550.72 : x
  2. Step 2: Convert to fraction form
    696.52/1,040.99 = 550.72/x
  3. Step 3: Cross multiply
    696.52x = 1,040.99 × 550.72
  4. Step 4: Simplify right side
    696.52x = 573,294.01
  5. Step 5: Solve for x
    x = 573,294.01/696.52
  6. Step 6: Final answer
    x = 823.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.