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Finding the Fourth Proportional to 284.20, 425.61 and 162.09

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Solution

The fourth proportional to 284.20, 425.61 and 162.09 is: 242.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.20 : 425.61 = 162.09 : x
  2. Step 2: Convert to fraction form
    284.20/425.61 = 162.09/x
  3. Step 3: Cross multiply
    284.20x = 425.61 × 162.09
  4. Step 4: Simplify right side
    284.20x = 68,984.19
  5. Step 5: Solve for x
    x = 68,984.19/284.20
  6. Step 6: Final answer
    x = 242.74

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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.