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Finding the Fourth Proportional to 336.31, 458.26 and 328.82

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Solution

The fourth proportional to 336.31, 458.26 and 328.82 is: 448.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.31 : 458.26 = 328.82 : x
  2. Step 2: Convert to fraction form
    336.31/458.26 = 328.82/x
  3. Step 3: Cross multiply
    336.31x = 458.26 × 328.82
  4. Step 4: Simplify right side
    336.31x = 150,681.94
  5. Step 5: Solve for x
    x = 150,681.94/336.31
  6. Step 6: Final answer
    x = 448.05

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.