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Finding the Fourth Proportional to 495.30, 742.88 and 170.68

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Solution

The fourth proportional to 495.30, 742.88 and 170.68 is: 256.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.30 : 742.88 = 170.68 : x
  2. Step 2: Convert to fraction form
    495.30/742.88 = 170.68/x
  3. Step 3: Cross multiply
    495.30x = 742.88 × 170.68
  4. Step 4: Simplify right side
    495.30x = 126,794.76
  5. Step 5: Solve for x
    x = 126,794.76/495.30
  6. Step 6: Final answer
    x = 256.00

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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.