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Finding the Fourth Proportional to 945.95, 1,418.97 and 483.17

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Solution

The fourth proportional to 945.95, 1,418.97 and 483.17 is: 724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.95 : 1,418.97 = 483.17 : x
  2. Step 2: Convert to fraction form
    945.95/1,418.97 = 483.17/x
  3. Step 3: Cross multiply
    945.95x = 1,418.97 × 483.17
  4. Step 4: Simplify right side
    945.95x = 685,603.73
  5. Step 5: Solve for x
    x = 685,603.73/945.95
  6. Step 6: Final answer
    x = 724.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.