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Finding the Fourth Proportional to 297.72, 444.93 and 239.30

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Solution

The fourth proportional to 297.72, 444.93 and 239.30 is: 357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.72 : 444.93 = 239.30 : x
  2. Step 2: Convert to fraction form
    297.72/444.93 = 239.30/x
  3. Step 3: Cross multiply
    297.72x = 444.93 × 239.30
  4. Step 4: Simplify right side
    297.72x = 106,471.75
  5. Step 5: Solve for x
    x = 106,471.75/297.72
  6. Step 6: Final answer
    x = 357.62

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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.