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Finding the Fourth Proportional to 793.82, 1,088.24 and 781.07

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Solution

The fourth proportional to 793.82, 1,088.24 and 781.07 is: 1,070.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.82 : 1,088.24 = 781.07 : x
  2. Step 2: Convert to fraction form
    793.82/1,088.24 = 781.07/x
  3. Step 3: Cross multiply
    793.82x = 1,088.24 × 781.07
  4. Step 4: Simplify right side
    793.82x = 849,982.27
  5. Step 5: Solve for x
    x = 849,982.27/793.82
  6. Step 6: Final answer
    x = 1,070.75

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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.