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Finding the Fourth Proportional to 303.78, 457.02 and 299.46

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Solution

The fourth proportional to 303.78, 457.02 and 299.46 is: 450.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.78 : 457.02 = 299.46 : x
  2. Step 2: Convert to fraction form
    303.78/457.02 = 299.46/x
  3. Step 3: Cross multiply
    303.78x = 457.02 × 299.46
  4. Step 4: Simplify right side
    303.78x = 136,859.21
  5. Step 5: Solve for x
    x = 136,859.21/303.78
  6. Step 6: Final answer
    x = 450.52

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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.