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Finding the Fourth Proportional to 299.30, 411.08 and 266.49

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Solution

The fourth proportional to 299.30, 411.08 and 266.49 is: 366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.30 : 411.08 = 266.49 : x
  2. Step 2: Convert to fraction form
    299.30/411.08 = 266.49/x
  3. Step 3: Cross multiply
    299.30x = 411.08 × 266.49
  4. Step 4: Simplify right side
    299.30x = 109,547.38
  5. Step 5: Solve for x
    x = 109,547.38/299.30
  6. Step 6: Final answer
    x = 366.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.