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Finding the Fourth Proportional to 398.72, 596.79 and 360.83

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Solution

The fourth proportional to 398.72, 596.79 and 360.83 is: 540.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.72 : 596.79 = 360.83 : x
  2. Step 2: Convert to fraction form
    398.72/596.79 = 360.83/x
  3. Step 3: Cross multiply
    398.72x = 596.79 × 360.83
  4. Step 4: Simplify right side
    398.72x = 215,341.23
  5. Step 5: Solve for x
    x = 215,341.23/398.72
  6. Step 6: Final answer
    x = 540.08

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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.