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Finding the Fourth Proportional to 454.72, 680.96 and 262.08

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Solution

The fourth proportional to 454.72, 680.96 and 262.08 is: 392.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.72 : 680.96 = 262.08 : x
  2. Step 2: Convert to fraction form
    454.72/680.96 = 262.08/x
  3. Step 3: Cross multiply
    454.72x = 680.96 × 262.08
  4. Step 4: Simplify right side
    454.72x = 178,466.00
  5. Step 5: Solve for x
    x = 178,466.00/454.72
  6. Step 6: Final answer
    x = 392.47

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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.