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Finding the Fourth Proportional to 980.01, 1,352.46 and 560.36

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Solution

The fourth proportional to 980.01, 1,352.46 and 560.36 is: 773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    980.01 : 1,352.46 = 560.36 : x
  2. Step 2: Convert to fraction form
    980.01/1,352.46 = 560.36/x
  3. Step 3: Cross multiply
    980.01x = 1,352.46 × 560.36
  4. Step 4: Simplify right side
    980.01x = 757,864.49
  5. Step 5: Solve for x
    x = 757,864.49/980.01
  6. Step 6: Final answer
    x = 773.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.