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Finding the Fourth Proportional to 734.80, 1,102.92 and 559.84

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Solution

The fourth proportional to 734.80, 1,102.92 and 559.84 is: 840.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.80 : 1,102.92 = 559.84 : x
  2. Step 2: Convert to fraction form
    734.80/1,102.92 = 559.84/x
  3. Step 3: Cross multiply
    734.80x = 1,102.92 × 559.84
  4. Step 4: Simplify right side
    734.80x = 617,458.73
  5. Step 5: Solve for x
    x = 617,458.73/734.80
  6. Step 6: Final answer
    x = 840.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.