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Finding the Fourth Proportional to 284.39, 392.70 and 179.66

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Solution

The fourth proportional to 284.39, 392.70 and 179.66 is: 248.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.39 : 392.70 = 179.66 : x
  2. Step 2: Convert to fraction form
    284.39/392.70 = 179.66/x
  3. Step 3: Cross multiply
    284.39x = 392.70 × 179.66
  4. Step 4: Simplify right side
    284.39x = 70,549.62
  5. Step 5: Solve for x
    x = 70,549.62/284.39
  6. Step 6: Final answer
    x = 248.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.