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Finding the Fourth Proportional to 402.25, 555.11 and 236.47

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Solution

The fourth proportional to 402.25, 555.11 and 236.47 is: 326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.25 : 555.11 = 236.47 : x
  2. Step 2: Convert to fraction form
    402.25/555.11 = 236.47/x
  3. Step 3: Cross multiply
    402.25x = 555.11 × 236.47
  4. Step 4: Simplify right side
    402.25x = 131,266.86
  5. Step 5: Solve for x
    x = 131,266.86/402.25
  6. Step 6: Final answer
    x = 326.33

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Double scale
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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.