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Finding the Fourth Proportional to 1,359.95, 2,038.97 and 656.73

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Solution

The fourth proportional to 1,359.95, 2,038.97 and 656.73 is: 984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.95 : 2,038.97 = 656.73 : x
  2. Step 2: Convert to fraction form
    1,359.95/2,038.97 = 656.73/x
  3. Step 3: Cross multiply
    1,359.95x = 2,038.97 × 656.73
  4. Step 4: Simplify right side
    1,359.95x = 1,339,052.77
  5. Step 5: Solve for x
    x = 1,339,052.77/1,359.95
  6. Step 6: Final answer
    x = 984.63

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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.