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Finding the Fourth Proportional to 797.18, 1,095.86 and 712.27

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Solution

The fourth proportional to 797.18, 1,095.86 and 712.27 is: 979.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.18 : 1,095.86 = 712.27 : x
  2. Step 2: Convert to fraction form
    797.18/1,095.86 = 712.27/x
  3. Step 3: Cross multiply
    797.18x = 1,095.86 × 712.27
  4. Step 4: Simplify right side
    797.18x = 780,542.72
  5. Step 5: Solve for x
    x = 780,542.72/797.18
  6. Step 6: Final answer
    x = 979.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.