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Finding the Fourth Proportional to 575.75, 862.90 and 453.53

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Solution

The fourth proportional to 575.75, 862.90 and 453.53 is: 679.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.75 : 862.90 = 453.53 : x
  2. Step 2: Convert to fraction form
    575.75/862.90 = 453.53/x
  3. Step 3: Cross multiply
    575.75x = 862.90 × 453.53
  4. Step 4: Simplify right side
    575.75x = 391,351.04
  5. Step 5: Solve for x
    x = 391,351.04/575.75
  6. Step 6: Final answer
    x = 679.72

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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.