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Finding the Fourth Proportional to 955.62, 1,319.22 and 694.26

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Solution

The fourth proportional to 955.62, 1,319.22 and 694.26 is: 958.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.62 : 1,319.22 = 694.26 : x
  2. Step 2: Convert to fraction form
    955.62/1,319.22 = 694.26/x
  3. Step 3: Cross multiply
    955.62x = 1,319.22 × 694.26
  4. Step 4: Simplify right side
    955.62x = 915,881.68
  5. Step 5: Solve for x
    x = 915,881.68/955.62
  6. Step 6: Final answer
    x = 958.42

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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.