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Finding the Fourth Proportional to 264.06, 395.28 and 206.45

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Solution

The fourth proportional to 264.06, 395.28 and 206.45 is: 309.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.06 : 395.28 = 206.45 : x
  2. Step 2: Convert to fraction form
    264.06/395.28 = 206.45/x
  3. Step 3: Cross multiply
    264.06x = 395.28 × 206.45
  4. Step 4: Simplify right side
    264.06x = 81,604.52
  5. Step 5: Solve for x
    x = 81,604.52/264.06
  6. Step 6: Final answer
    x = 309.04

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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.