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Finding the Fourth Proportional to 728.49, 1,093.04 and 266.48

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Solution

The fourth proportional to 728.49, 1,093.04 and 266.48 is: 399.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.49 : 1,093.04 = 266.48 : x
  2. Step 2: Convert to fraction form
    728.49/1,093.04 = 266.48/x
  3. Step 3: Cross multiply
    728.49x = 1,093.04 × 266.48
  4. Step 4: Simplify right side
    728.49x = 291,266.50
  5. Step 5: Solve for x
    x = 291,266.50/728.49
  6. Step 6: Final answer
    x = 399.82

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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.