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Finding the Fourth Proportional to 575.24, 862.85 and 209.77

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Solution

The fourth proportional to 575.24, 862.85 and 209.77 is: 314.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.24 : 862.85 = 209.77 : x
  2. Step 2: Convert to fraction form
    575.24/862.85 = 209.77/x
  3. Step 3: Cross multiply
    575.24x = 862.85 × 209.77
  4. Step 4: Simplify right side
    575.24x = 180,998.41
  5. Step 5: Solve for x
    x = 180,998.41/575.24
  6. Step 6: Final answer
    x = 314.65

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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.