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Finding the Fourth Proportional to 775.18, 1,167.36 and 560.26

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Solution

The fourth proportional to 775.18, 1,167.36 and 560.26 is: 843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.18 : 1,167.36 = 560.26 : x
  2. Step 2: Convert to fraction form
    775.18/1,167.36 = 560.26/x
  3. Step 3: Cross multiply
    775.18x = 1,167.36 × 560.26
  4. Step 4: Simplify right side
    775.18x = 654,022.31
  5. Step 5: Solve for x
    x = 654,022.31/775.18
  6. Step 6: Final answer
    x = 843.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.