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Finding the Fourth Proportional to 1,104.94, 1,657.56 and 520.54

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Solution

The fourth proportional to 1,104.94, 1,657.56 and 520.54 is: 780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.94 : 1,657.56 = 520.54 : x
  2. Step 2: Convert to fraction form
    1,104.94/1,657.56 = 520.54/x
  3. Step 3: Cross multiply
    1,104.94x = 1,657.56 × 520.54
  4. Step 4: Simplify right side
    1,104.94x = 862,826.28
  5. Step 5: Solve for x
    x = 862,826.28/1,104.94
  6. Step 6: Final answer
    x = 780.88

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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.