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Finding the Fourth Proportional to 797.86, 1,100.73 and 487.54

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Solution

The fourth proportional to 797.86, 1,100.73 and 487.54 is: 672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.86 : 1,100.73 = 487.54 : x
  2. Step 2: Convert to fraction form
    797.86/1,100.73 = 487.54/x
  3. Step 3: Cross multiply
    797.86x = 1,100.73 × 487.54
  4. Step 4: Simplify right side
    797.86x = 536,649.90
  5. Step 5: Solve for x
    x = 536,649.90/797.86
  6. Step 6: Final answer
    x = 672.61

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.