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Finding the Fourth Proportional to 797.12, 1,100.12 and 610.28

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Solution

The fourth proportional to 797.12, 1,100.12 and 610.28 is: 842.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.12 : 1,100.12 = 610.28 : x
  2. Step 2: Convert to fraction form
    797.12/1,100.12 = 610.28/x
  3. Step 3: Cross multiply
    797.12x = 1,100.12 × 610.28
  4. Step 4: Simplify right side
    797.12x = 671,381.23
  5. Step 5: Solve for x
    x = 671,381.23/797.12
  6. Step 6: Final answer
    x = 842.26

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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.