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Finding the Fourth Proportional to 537.02, 805.45 and 212.61

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Solution

The fourth proportional to 537.02, 805.45 and 212.61 is: 318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.02 : 805.45 = 212.61 : x
  2. Step 2: Convert to fraction form
    537.02/805.45 = 212.61/x
  3. Step 3: Cross multiply
    537.02x = 805.45 × 212.61
  4. Step 4: Simplify right side
    537.02x = 171,246.72
  5. Step 5: Solve for x
    x = 171,246.72/537.02
  6. Step 6: Final answer
    x = 318.88

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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.