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Finding the Fourth Proportional to 844.86, 1,266.47 and 454.58

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Solution

The fourth proportional to 844.86, 1,266.47 and 454.58 is: 681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.86 : 1,266.47 = 454.58 : x
  2. Step 2: Convert to fraction form
    844.86/1,266.47 = 454.58/x
  3. Step 3: Cross multiply
    844.86x = 1,266.47 × 454.58
  4. Step 4: Simplify right side
    844.86x = 575,709.78
  5. Step 5: Solve for x
    x = 575,709.78/844.86
  6. Step 6: Final answer
    x = 681.42

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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.