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Finding the Fourth Proportional to 1,594.64, 2,391.96 and 728.78

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Solution

The fourth proportional to 1,594.64, 2,391.96 and 728.78 is: 1,093.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,594.64 : 2,391.96 = 728.78 : x
  2. Step 2: Convert to fraction form
    1,594.64/2,391.96 = 728.78/x
  3. Step 3: Cross multiply
    1,594.64x = 2,391.96 × 728.78
  4. Step 4: Simplify right side
    1,594.64x = 1,743,212.61
  5. Step 5: Solve for x
    x = 1,743,212.61/1,594.64
  6. Step 6: Final answer
    x = 1,093.17

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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.