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Finding the Fourth Proportional to 943.89, 1,304.18 and 910.62

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Solution

The fourth proportional to 943.89, 1,304.18 and 910.62 is: 1,258.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.89 : 1,304.18 = 910.62 : x
  2. Step 2: Convert to fraction form
    943.89/1,304.18 = 910.62/x
  3. Step 3: Cross multiply
    943.89x = 1,304.18 × 910.62
  4. Step 4: Simplify right side
    943.89x = 1,187,607.84
  5. Step 5: Solve for x
    x = 1,187,607.84/943.89
  6. Step 6: Final answer
    x = 1,258.21

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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.