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Finding the Fourth Proportional to 624.11, 936.18 and 299.12

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Solution

The fourth proportional to 624.11, 936.18 and 299.12 is: 448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.11 : 936.18 = 299.12 : x
  2. Step 2: Convert to fraction form
    624.11/936.18 = 299.12/x
  3. Step 3: Cross multiply
    624.11x = 936.18 × 299.12
  4. Step 4: Simplify right side
    624.11x = 280,030.16
  5. Step 5: Solve for x
    x = 280,030.16/624.11
  6. Step 6: Final answer
    x = 448.69

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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.