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Finding the Fourth Proportional to 865.64, 1,194.16 and 550.96

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Solution

The fourth proportional to 865.64, 1,194.16 and 550.96 is: 760.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.64 : 1,194.16 = 550.96 : x
  2. Step 2: Convert to fraction form
    865.64/1,194.16 = 550.96/x
  3. Step 3: Cross multiply
    865.64x = 1,194.16 × 550.96
  4. Step 4: Simplify right side
    865.64x = 657,934.39
  5. Step 5: Solve for x
    x = 657,934.39/865.64
  6. Step 6: Final answer
    x = 760.06

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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.