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Finding the Fourth Proportional to 284.54, 392.69 and 164.92

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Solution

The fourth proportional to 284.54, 392.69 and 164.92 is: 227.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.54 : 392.69 = 164.92 : x
  2. Step 2: Convert to fraction form
    284.54/392.69 = 164.92/x
  3. Step 3: Cross multiply
    284.54x = 392.69 × 164.92
  4. Step 4: Simplify right side
    284.54x = 64,760.61
  5. Step 5: Solve for x
    x = 64,760.61/284.54
  6. Step 6: Final answer
    x = 227.59

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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.