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Finding the Fourth Proportional to 943.76, 1,304.16 and 695.36

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Solution

The fourth proportional to 943.76, 1,304.16 and 695.36 is: 960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.76 : 1,304.16 = 695.36 : x
  2. Step 2: Convert to fraction form
    943.76/1,304.16 = 695.36/x
  3. Step 3: Cross multiply
    943.76x = 1,304.16 × 695.36
  4. Step 4: Simplify right side
    943.76x = 906,860.70
  5. Step 5: Solve for x
    x = 906,860.70/943.76
  6. Step 6: Final answer
    x = 960.90

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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.