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Finding the Fourth Proportional to 574.40, 862.98 and 369.38

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Solution

The fourth proportional to 574.40, 862.98 and 369.38 is: 554.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.40 : 862.98 = 369.38 : x
  2. Step 2: Convert to fraction form
    574.40/862.98 = 369.38/x
  3. Step 3: Cross multiply
    574.40x = 862.98 × 369.38
  4. Step 4: Simplify right side
    574.40x = 318,767.55
  5. Step 5: Solve for x
    x = 318,767.55/574.40
  6. Step 6: Final answer
    x = 554.96

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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.