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Finding the Fourth Proportional to 284.40, 392.28 and 179.46

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Solution

The fourth proportional to 284.40, 392.28 and 179.46 is: 247.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.40 : 392.28 = 179.46 : x
  2. Step 2: Convert to fraction form
    284.40/392.28 = 179.46/x
  3. Step 3: Cross multiply
    284.40x = 392.28 × 179.46
  4. Step 4: Simplify right side
    284.40x = 70,398.57
  5. Step 5: Solve for x
    x = 70,398.57/284.40
  6. Step 6: Final answer
    x = 247.53

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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.