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Finding the Fourth Proportional to 956.92, 1,317.76 and 823.04

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Solution

The fourth proportional to 956.92, 1,317.76 and 823.04 is: 1,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.92 : 1,317.76 = 823.04 : x
  2. Step 2: Convert to fraction form
    956.92/1,317.76 = 823.04/x
  3. Step 3: Cross multiply
    956.92x = 1,317.76 × 823.04
  4. Step 4: Simplify right side
    956.92x = 1,084,569.19
  5. Step 5: Solve for x
    x = 1,084,569.19/956.92
  6. Step 6: Final answer
    x = 1,133.40

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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.