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Finding the Fourth Proportional to 284.19, 426.19 and 101.55

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Solution

The fourth proportional to 284.19, 426.19 and 101.55 is: 152.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.19 : 426.19 = 101.55 : x
  2. Step 2: Convert to fraction form
    284.19/426.19 = 101.55/x
  3. Step 3: Cross multiply
    284.19x = 426.19 × 101.55
  4. Step 4: Simplify right side
    284.19x = 43,279.59
  5. Step 5: Solve for x
    x = 43,279.59/284.19
  6. Step 6: Final answer
    x = 152.29

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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.