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Finding the Fourth Proportional to 511.20, 766.85 and 237.25

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Solution

The fourth proportional to 511.20, 766.85 and 237.25 is: 355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.20 : 766.85 = 237.25 : x
  2. Step 2: Convert to fraction form
    511.20/766.85 = 237.25/x
  3. Step 3: Cross multiply
    511.20x = 766.85 × 237.25
  4. Step 4: Simplify right side
    511.20x = 181,933.84
  5. Step 5: Solve for x
    x = 181,933.84/511.20
  6. Step 6: Final answer
    x = 355.90

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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.