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Finding the Fourth Proportional to 956.91, 1,321.32 and 603.41

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Solution

The fourth proportional to 956.91, 1,321.32 and 603.41 is: 833.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.91 : 1,321.32 = 603.41 : x
  2. Step 2: Convert to fraction form
    956.91/1,321.32 = 603.41/x
  3. Step 3: Cross multiply
    956.91x = 1,321.32 × 603.41
  4. Step 4: Simplify right side
    956.91x = 797,293.36
  5. Step 5: Solve for x
    x = 797,293.36/956.91
  6. Step 6: Final answer
    x = 833.19

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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.