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Finding the Fourth Proportional to 950.80, 1,426.93 and 660.34

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Solution

The fourth proportional to 950.80, 1,426.93 and 660.34 is: 991.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.80 : 1,426.93 = 660.34 : x
  2. Step 2: Convert to fraction form
    950.80/1,426.93 = 660.34/x
  3. Step 3: Cross multiply
    950.80x = 1,426.93 × 660.34
  4. Step 4: Simplify right side
    950.80x = 942,258.96
  5. Step 5: Solve for x
    x = 942,258.96/950.80
  6. Step 6: Final answer
    x = 991.02

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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.