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Finding the Fourth Proportional to 574.95, 862.66 and 209.77

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Solution

The fourth proportional to 574.95, 862.66 and 209.77 is: 314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.95 : 862.66 = 209.77 : x
  2. Step 2: Convert to fraction form
    574.95/862.66 = 209.77/x
  3. Step 3: Cross multiply
    574.95x = 862.66 × 209.77
  4. Step 4: Simplify right side
    574.95x = 180,960.19
  5. Step 5: Solve for x
    x = 180,960.19/574.95
  6. Step 6: Final answer
    x = 314.74

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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.