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Finding the Fourth Proportional to 346.61, 480.52 and 328.12

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Solution

The fourth proportional to 346.61, 480.52 and 328.12 is: 454.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.61 : 480.52 = 328.12 : x
  2. Step 2: Convert to fraction form
    346.61/480.52 = 328.12/x
  3. Step 3: Cross multiply
    346.61x = 480.52 × 328.12
  4. Step 4: Simplify right side
    346.61x = 157,665.59
  5. Step 5: Solve for x
    x = 157,665.59/346.61
  6. Step 6: Final answer
    x = 454.88

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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.