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Finding the Fourth Proportional to 943.89, 1,302.30 and 612.03

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Solution

The fourth proportional to 943.89, 1,302.30 and 612.03 is: 844.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.89 : 1,302.30 = 612.03 : x
  2. Step 2: Convert to fraction form
    943.89/1,302.30 = 612.03/x
  3. Step 3: Cross multiply
    943.89x = 1,302.30 × 612.03
  4. Step 4: Simplify right side
    943.89x = 797,046.67
  5. Step 5: Solve for x
    x = 797,046.67/943.89
  6. Step 6: Final answer
    x = 844.43

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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.