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Finding the Fourth Proportional to 956.20, 1,318.12 and 606.28

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Solution

The fourth proportional to 956.20, 1,318.12 and 606.28 is: 835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.20 : 1,318.12 = 606.28 : x
  2. Step 2: Convert to fraction form
    956.20/1,318.12 = 606.28/x
  3. Step 3: Cross multiply
    956.20x = 1,318.12 × 606.28
  4. Step 4: Simplify right side
    956.20x = 799,149.79
  5. Step 5: Solve for x
    x = 799,149.79/956.20
  6. Step 6: Final answer
    x = 835.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.