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Finding the Fourth Proportional to 332.23, 458.31 and 208

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Solution

The fourth proportional to 332.23, 458.31 and 208 is: 286.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.23 : 458.31 = 208 : x
  2. Step 2: Convert to fraction form
    332.23/458.31 = 208/x
  3. Step 3: Cross multiply
    332.23x = 458.31 × 208
  4. Step 4: Simplify right side
    332.23x = 95,328.48
  5. Step 5: Solve for x
    x = 95,328.48/332.23
  6. Step 6: Final answer
    x = 286.94

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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.