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Finding the Fourth Proportional to 699.05, 963.45 and 574.31

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Solution

The fourth proportional to 699.05, 963.45 and 574.31 is: 791.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.05 : 963.45 = 574.31 : x
  2. Step 2: Convert to fraction form
    699.05/963.45 = 574.31/x
  3. Step 3: Cross multiply
    699.05x = 963.45 × 574.31
  4. Step 4: Simplify right side
    699.05x = 553,321.38
  5. Step 5: Solve for x
    x = 553,321.38/699.05
  6. Step 6: Final answer
    x = 791.53

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1.5x scale

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.