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Finding the Fourth Proportional to 756.72, 1,135.11 and 237.07

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Solution

The fourth proportional to 756.72, 1,135.11 and 237.07 is: 355.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.72 : 1,135.11 = 237.07 : x
  2. Step 2: Convert to fraction form
    756.72/1,135.11 = 237.07/x
  3. Step 3: Cross multiply
    756.72x = 1,135.11 × 237.07
  4. Step 4: Simplify right side
    756.72x = 269,100.53
  5. Step 5: Solve for x
    x = 269,100.53/756.72
  6. Step 6: Final answer
    x = 355.61

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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.