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Finding the Fourth Proportional to 398.33, 596.34 and 260.99

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Solution

The fourth proportional to 398.33, 596.34 and 260.99 is: 390.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.33 : 596.34 = 260.99 : x
  2. Step 2: Convert to fraction form
    398.33/596.34 = 260.99/x
  3. Step 3: Cross multiply
    398.33x = 596.34 × 260.99
  4. Step 4: Simplify right side
    398.33x = 155,635.79
  5. Step 5: Solve for x
    x = 155,635.79/398.33
  6. Step 6: Final answer
    x = 390.73

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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.