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Finding the Fourth Proportional to 284.01, 391.91 and 159.63

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Solution

The fourth proportional to 284.01, 391.91 and 159.63 is: 220.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.01 : 391.91 = 159.63 : x
  2. Step 2: Convert to fraction form
    284.01/391.91 = 159.63/x
  3. Step 3: Cross multiply
    284.01x = 391.91 × 159.63
  4. Step 4: Simplify right side
    284.01x = 62,559.80
  5. Step 5: Solve for x
    x = 62,559.80/284.01
  6. Step 6: Final answer
    x = 220.27

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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.