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Finding the Fourth Proportional to 307.56, 458.55 and 299.73

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Solution

The fourth proportional to 307.56, 458.55 and 299.73 is: 446.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.56 : 458.55 = 299.73 : x
  2. Step 2: Convert to fraction form
    307.56/458.55 = 299.73/x
  3. Step 3: Cross multiply
    307.56x = 458.55 × 299.73
  4. Step 4: Simplify right side
    307.56x = 137,441.19
  5. Step 5: Solve for x
    x = 137,441.19/307.56
  6. Step 6: Final answer
    x = 446.88

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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.