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Finding the Fourth Proportional to 956.51, 1,318.48 and 676.15

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Solution

The fourth proportional to 956.51, 1,318.48 and 676.15 is: 932.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.51 : 1,318.48 = 676.15 : x
  2. Step 2: Convert to fraction form
    956.51/1,318.48 = 676.15/x
  3. Step 3: Cross multiply
    956.51x = 1,318.48 × 676.15
  4. Step 4: Simplify right side
    956.51x = 891,485.27
  5. Step 5: Solve for x
    x = 891,485.27/956.51
  6. Step 6: Final answer
    x = 932.02

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1.5x scale

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.