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Finding the Fourth Proportional to 284.84, 426.95 and 122.62

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Solution

The fourth proportional to 284.84, 426.95 and 122.62 is: 183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.84 : 426.95 = 122.62 : x
  2. Step 2: Convert to fraction form
    284.84/426.95 = 122.62/x
  3. Step 3: Cross multiply
    284.84x = 426.95 × 122.62
  4. Step 4: Simplify right side
    284.84x = 52,352.61
  5. Step 5: Solve for x
    x = 52,352.61/284.84
  6. Step 6: Final answer
    x = 183.80

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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.