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Finding the Fourth Proportional to 624.02, 936.40 and 299.42

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Solution

The fourth proportional to 624.02, 936.40 and 299.42 is: 449.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.02 : 936.40 = 299.42 : x
  2. Step 2: Convert to fraction form
    624.02/936.40 = 299.42/x
  3. Step 3: Cross multiply
    624.02x = 936.40 × 299.42
  4. Step 4: Simplify right side
    624.02x = 280,376.89
  5. Step 5: Solve for x
    x = 280,376.89/624.02
  6. Step 6: Final answer
    x = 449.31

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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.