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Finding the Fourth Proportional to 303.78, 453.03 and 264.90

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Solution

The fourth proportional to 303.78, 453.03 and 264.90 is: 395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.78 : 453.03 = 264.90 : x
  2. Step 2: Convert to fraction form
    303.78/453.03 = 264.90/x
  3. Step 3: Cross multiply
    303.78x = 453.03 × 264.90
  4. Step 4: Simplify right side
    303.78x = 120,007.65
  5. Step 5: Solve for x
    x = 120,007.65/303.78
  6. Step 6: Final answer
    x = 395.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.