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Finding the Fourth Proportional to 308.91, 426.59 and 264.39

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Solution

The fourth proportional to 308.91, 426.59 and 264.39 is: 365.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.91 : 426.59 = 264.39 : x
  2. Step 2: Convert to fraction form
    308.91/426.59 = 264.39/x
  3. Step 3: Cross multiply
    308.91x = 426.59 × 264.39
  4. Step 4: Simplify right side
    308.91x = 112,786.13
  5. Step 5: Solve for x
    x = 112,786.13/308.91
  6. Step 6: Final answer
    x = 365.11

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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.