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Finding the Fourth Proportional to 750.28, 1,125.56 and 263.26

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Solution

The fourth proportional to 750.28, 1,125.56 and 263.26 is: 394.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.28 : 1,125.56 = 263.26 : x
  2. Step 2: Convert to fraction form
    750.28/1,125.56 = 263.26/x
  3. Step 3: Cross multiply
    750.28x = 1,125.56 × 263.26
  4. Step 4: Simplify right side
    750.28x = 296,314.93
  5. Step 5: Solve for x
    x = 296,314.93/750.28
  6. Step 6: Final answer
    x = 394.94

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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.