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Finding the Fourth Proportional to 399.37, 599.06 and 228.25

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Solution

The fourth proportional to 399.37, 599.06 and 228.25 is: 342.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.37 : 599.06 = 228.25 : x
  2. Step 2: Convert to fraction form
    399.37/599.06 = 228.25/x
  3. Step 3: Cross multiply
    399.37x = 599.06 × 228.25
  4. Step 4: Simplify right side
    399.37x = 136,734.30
  5. Step 5: Solve for x
    x = 136,734.30/399.37
  6. Step 6: Final answer
    x = 342.38

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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.