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Finding the Fourth Proportional to 284.66, 427.04 and 169.20

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Solution

The fourth proportional to 284.66, 427.04 and 169.20 is: 253.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.66 : 427.04 = 169.20 : x
  2. Step 2: Convert to fraction form
    284.66/427.04 = 169.20/x
  3. Step 3: Cross multiply
    284.66x = 427.04 × 169.20
  4. Step 4: Simplify right side
    284.66x = 72,255.17
  5. Step 5: Solve for x
    x = 72,255.17/284.66
  6. Step 6: Final answer
    x = 253.83

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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.