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Finding the Fourth Proportional to 844.17, 1,266.30 and 381.93

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Solution

The fourth proportional to 844.17, 1,266.30 and 381.93 is: 572.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.17 : 1,266.30 = 381.93 : x
  2. Step 2: Convert to fraction form
    844.17/1,266.30 = 381.93/x
  3. Step 3: Cross multiply
    844.17x = 1,266.30 × 381.93
  4. Step 4: Simplify right side
    844.17x = 483,637.96
  5. Step 5: Solve for x
    x = 483,637.96/844.17
  6. Step 6: Final answer
    x = 572.92

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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.