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Finding the Fourth Proportional to 886.97, 1,224 and 493.98

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Solution

The fourth proportional to 886.97, 1,224 and 493.98 is: 681.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.97 : 1,224 = 493.98 : x
  2. Step 2: Convert to fraction form
    886.97/1,224 = 493.98/x
  3. Step 3: Cross multiply
    886.97x = 1,224 × 493.98
  4. Step 4: Simplify right side
    886.97x = 604,631.52
  5. Step 5: Solve for x
    x = 604,631.52/886.97
  6. Step 6: Final answer
    x = 681.68

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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.