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Finding the Fourth Proportional to 283.98, 391.93 and 159.66

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Solution

The fourth proportional to 283.98, 391.93 and 159.66 is: 220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.98 : 391.93 = 159.66 : x
  2. Step 2: Convert to fraction form
    283.98/391.93 = 159.66/x
  3. Step 3: Cross multiply
    283.98x = 391.93 × 159.66
  4. Step 4: Simplify right side
    283.98x = 62,575.14
  5. Step 5: Solve for x
    x = 62,575.14/283.98
  6. Step 6: Final answer
    x = 220.35

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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.