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Finding the Fourth Proportional to 310.56, 429.08 and 264.42

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Solution

The fourth proportional to 310.56, 429.08 and 264.42 is: 365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.56 : 429.08 = 264.42 : x
  2. Step 2: Convert to fraction form
    310.56/429.08 = 264.42/x
  3. Step 3: Cross multiply
    310.56x = 429.08 × 264.42
  4. Step 4: Simplify right side
    310.56x = 113,456.01
  5. Step 5: Solve for x
    x = 113,456.01/310.56
  6. Step 6: Final answer
    x = 365.33

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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.