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Finding the Fourth Proportional to 284.75, 426.93 and 154.95

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Solution

The fourth proportional to 284.75, 426.93 and 154.95 is: 232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.75 : 426.93 = 154.95 : x
  2. Step 2: Convert to fraction form
    284.75/426.93 = 154.95/x
  3. Step 3: Cross multiply
    284.75x = 426.93 × 154.95
  4. Step 4: Simplify right side
    284.75x = 66,152.80
  5. Step 5: Solve for x
    x = 66,152.80/284.75
  6. Step 6: Final answer
    x = 232.32

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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.