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Finding the Fourth Proportional to 285.58, 394.14 and 169.30

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Solution

The fourth proportional to 285.58, 394.14 and 169.30 is: 233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.58 : 394.14 = 169.30 : x
  2. Step 2: Convert to fraction form
    285.58/394.14 = 169.30/x
  3. Step 3: Cross multiply
    285.58x = 394.14 × 169.30
  4. Step 4: Simplify right side
    285.58x = 66,727.90
  5. Step 5: Solve for x
    x = 66,727.90/285.58
  6. Step 6: Final answer
    x = 233.66

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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.