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Finding the Fourth Proportional to 394.72, 590.58 and 243.88

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Solution

The fourth proportional to 394.72, 590.58 and 243.88 is: 364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.72 : 590.58 = 243.88 : x
  2. Step 2: Convert to fraction form
    394.72/590.58 = 243.88/x
  3. Step 3: Cross multiply
    394.72x = 590.58 × 243.88
  4. Step 4: Simplify right side
    394.72x = 144,030.65
  5. Step 5: Solve for x
    x = 144,030.65/394.72
  6. Step 6: Final answer
    x = 364.89

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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.