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Finding the Fourth Proportional to 264.06, 395.96 and 212.81

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Solution

The fourth proportional to 264.06, 395.96 and 212.81 is: 319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.06 : 395.96 = 212.81 : x
  2. Step 2: Convert to fraction form
    264.06/395.96 = 212.81/x
  3. Step 3: Cross multiply
    264.06x = 395.96 × 212.81
  4. Step 4: Simplify right side
    264.06x = 84,261.20
  5. Step 5: Solve for x
    x = 84,261.20/264.06
  6. Step 6: Final answer
    x = 319.10

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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.