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Finding the Fourth Proportional to 624.42, 936.45 and 185.65

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Solution

The fourth proportional to 624.42, 936.45 and 185.65 is: 278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.42 : 936.45 = 185.65 : x
  2. Step 2: Convert to fraction form
    624.42/936.45 = 185.65/x
  3. Step 3: Cross multiply
    624.42x = 936.45 × 185.65
  4. Step 4: Simplify right side
    624.42x = 173,853.11
  5. Step 5: Solve for x
    x = 173,853.11/624.42
  6. Step 6: Final answer
    x = 278.42

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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.