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Finding the Fourth Proportional to 750.77, 1,126.04 and 263.75

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Solution

The fourth proportional to 750.77, 1,126.04 and 263.75 is: 395.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.77 : 1,126.04 = 263.75 : x
  2. Step 2: Convert to fraction form
    750.77/1,126.04 = 263.75/x
  3. Step 3: Cross multiply
    750.77x = 1,126.04 × 263.75
  4. Step 4: Simplify right side
    750.77x = 296,993.05
  5. Step 5: Solve for x
    x = 296,993.05/750.77
  6. Step 6: Final answer
    x = 395.59

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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.