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Finding the Fourth Proportional to 956.28, 1,426.01 and 880.55

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Solution

The fourth proportional to 956.28, 1,426.01 and 880.55 is: 1,313.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.28 : 1,426.01 = 880.55 : x
  2. Step 2: Convert to fraction form
    956.28/1,426.01 = 880.55/x
  3. Step 3: Cross multiply
    956.28x = 1,426.01 × 880.55
  4. Step 4: Simplify right side
    956.28x = 1,255,662.91
  5. Step 5: Solve for x
    x = 1,255,662.91/956.28
  6. Step 6: Final answer
    x = 1,313.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.