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Finding the Fourth Proportional to 399.08, 598.85 and 223.52

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Solution

The fourth proportional to 399.08, 598.85 and 223.52 is: 335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.08 : 598.85 = 223.52 : x
  2. Step 2: Convert to fraction form
    399.08/598.85 = 223.52/x
  3. Step 3: Cross multiply
    399.08x = 598.85 × 223.52
  4. Step 4: Simplify right side
    399.08x = 133,850.84
  5. Step 5: Solve for x
    x = 133,850.84/399.08
  6. Step 6: Final answer
    x = 335.40

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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.