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Finding the Fourth Proportional to 537.13, 805.51 and 255.66

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Solution

The fourth proportional to 537.13, 805.51 and 255.66 is: 383.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.13 : 805.51 = 255.66 : x
  2. Step 2: Convert to fraction form
    537.13/805.51 = 255.66/x
  3. Step 3: Cross multiply
    537.13x = 805.51 × 255.66
  4. Step 4: Simplify right side
    537.13x = 205,940.78
  5. Step 5: Solve for x
    x = 205,940.78/537.13
  6. Step 6: Final answer
    x = 383.41

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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.