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Finding the Fourth Proportional to 797.31, 1,099.71 and 502.25

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Solution

The fourth proportional to 797.31, 1,099.71 and 502.25 is: 692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.31 : 1,099.71 = 502.25 : x
  2. Step 2: Convert to fraction form
    797.31/1,099.71 = 502.25/x
  3. Step 3: Cross multiply
    797.31x = 1,099.71 × 502.25
  4. Step 4: Simplify right side
    797.31x = 552,323.85
  5. Step 5: Solve for x
    x = 552,323.85/797.31
  6. Step 6: Final answer
    x = 692.73

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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.