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Finding the Fourth Proportional to 338.81, 467.47 and 228.10

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Solution

The fourth proportional to 338.81, 467.47 and 228.10 is: 314.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.81 : 467.47 = 228.10 : x
  2. Step 2: Convert to fraction form
    338.81/467.47 = 228.10/x
  3. Step 3: Cross multiply
    338.81x = 467.47 × 228.10
  4. Step 4: Simplify right side
    338.81x = 106,628.17
  5. Step 5: Solve for x
    x = 106,628.17/338.81
  6. Step 6: Final answer
    x = 314.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.