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Finding the Fourth Proportional to 775.22, 1,154.04 and 771.11

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Solution

The fourth proportional to 775.22, 1,154.04 and 771.11 is: 1,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.22 : 1,154.04 = 771.11 : x
  2. Step 2: Convert to fraction form
    775.22/1,154.04 = 771.11/x
  3. Step 3: Cross multiply
    775.22x = 1,154.04 × 771.11
  4. Step 4: Simplify right side
    775.22x = 889,887.93
  5. Step 5: Solve for x
    x = 889,887.93/775.22
  6. Step 6: Final answer
    x = 1,147.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.