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Finding the Fourth Proportional to 495.44, 742.62 and 290.11

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Solution

The fourth proportional to 495.44, 742.62 and 290.11 is: 434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.44 : 742.62 = 290.11 : x
  2. Step 2: Convert to fraction form
    495.44/742.62 = 290.11/x
  3. Step 3: Cross multiply
    495.44x = 742.62 × 290.11
  4. Step 4: Simplify right side
    495.44x = 215,441.49
  5. Step 5: Solve for x
    x = 215,441.49/495.44
  6. Step 6: Final answer
    x = 434.85

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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.