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Finding the Fourth Proportional to 263.81, 362.99 and 242.21

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Solution

The fourth proportional to 263.81, 362.99 and 242.21 is: 333.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.81 : 362.99 = 242.21 : x
  2. Step 2: Convert to fraction form
    263.81/362.99 = 242.21/x
  3. Step 3: Cross multiply
    263.81x = 362.99 × 242.21
  4. Step 4: Simplify right side
    263.81x = 87,916.78
  5. Step 5: Solve for x
    x = 87,916.78/263.81
  6. Step 6: Final answer
    x = 333.26

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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.