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Finding the Fourth Proportional to 537.25, 805.47 and 212.71

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Solution

The fourth proportional to 537.25, 805.47 and 212.71 is: 318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.25 : 805.47 = 212.71 : x
  2. Step 2: Convert to fraction form
    537.25/805.47 = 212.71/x
  3. Step 3: Cross multiply
    537.25x = 805.47 × 212.71
  4. Step 4: Simplify right side
    537.25x = 171,331.52
  5. Step 5: Solve for x
    x = 171,331.52/537.25
  6. Step 6: Final answer
    x = 318.90

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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.