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Finding the Fourth Proportional to 341.82, 474.30 and 328.11

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Solution

The fourth proportional to 341.82, 474.30 and 328.11 is: 455.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.82 : 474.30 = 328.11 : x
  2. Step 2: Convert to fraction form
    341.82/474.30 = 328.11/x
  3. Step 3: Cross multiply
    341.82x = 474.30 × 328.11
  4. Step 4: Simplify right side
    341.82x = 155,622.57
  5. Step 5: Solve for x
    x = 155,622.57/341.82
  6. Step 6: Final answer
    x = 455.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.