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Finding the Fourth Proportional to 402.08, 554.90 and 236.34

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Solution

The fourth proportional to 402.08, 554.90 and 236.34 is: 326.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.08 : 554.90 = 236.34 : x
  2. Step 2: Convert to fraction form
    402.08/554.90 = 236.34/x
  3. Step 3: Cross multiply
    402.08x = 554.90 × 236.34
  4. Step 4: Simplify right side
    402.08x = 131,143.88
  5. Step 5: Solve for x
    x = 131,143.88/402.08
  6. Step 6: Final answer
    x = 326.16

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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.