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Finding the Fourth Proportional to 402.54, 603.60 and 272.54

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Solution

The fourth proportional to 402.54, 603.60 and 272.54 is: 408.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.54 : 603.60 = 272.54 : x
  2. Step 2: Convert to fraction form
    402.54/603.60 = 272.54/x
  3. Step 3: Cross multiply
    402.54x = 603.60 × 272.54
  4. Step 4: Simplify right side
    402.54x = 164,502.13
  5. Step 5: Solve for x
    x = 164,502.13/402.54
  6. Step 6: Final answer
    x = 408.66

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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.