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Finding the Fourth Proportional to 331.75, 458.08 and 266.55

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Solution

The fourth proportional to 331.75, 458.08 and 266.55 is: 368.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.75 : 458.08 = 266.55 : x
  2. Step 2: Convert to fraction form
    331.75/458.08 = 266.55/x
  3. Step 3: Cross multiply
    331.75x = 458.08 × 266.55
  4. Step 4: Simplify right side
    331.75x = 122,101.22
  5. Step 5: Solve for x
    x = 122,101.22/331.75
  6. Step 6: Final answer
    x = 368.05

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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.