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Finding the Fourth Proportional to 755.54, 1,132.66 and 293.65

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Solution

The fourth proportional to 755.54, 1,132.66 and 293.65 is: 440.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.54 : 1,132.66 = 293.65 : x
  2. Step 2: Convert to fraction form
    755.54/1,132.66 = 293.65/x
  3. Step 3: Cross multiply
    755.54x = 1,132.66 × 293.65
  4. Step 4: Simplify right side
    755.54x = 332,602.78
  5. Step 5: Solve for x
    x = 332,602.78/755.54
  6. Step 6: Final answer
    x = 440.22

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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.