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Finding the Fourth Proportional to 283.84, 391.69 and 159.51

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Solution

The fourth proportional to 283.84, 391.69 and 159.51 is: 220.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.84 : 391.69 = 159.51 : x
  2. Step 2: Convert to fraction form
    283.84/391.69 = 159.51/x
  3. Step 3: Cross multiply
    283.84x = 391.69 × 159.51
  4. Step 4: Simplify right side
    283.84x = 62,476.51
  5. Step 5: Solve for x
    x = 62,476.51/283.84
  6. Step 6: Final answer
    x = 220.11

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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.