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Finding the Fourth Proportional to 854.90, 1,180.08 and 560.24

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Solution

The fourth proportional to 854.90, 1,180.08 and 560.24 is: 773.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.90 : 1,180.08 = 560.24 : x
  2. Step 2: Convert to fraction form
    854.90/1,180.08 = 560.24/x
  3. Step 3: Cross multiply
    854.90x = 1,180.08 × 560.24
  4. Step 4: Simplify right side
    854.90x = 661,128.02
  5. Step 5: Solve for x
    x = 661,128.02/854.90
  6. Step 6: Final answer
    x = 773.34

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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.