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Finding the Fourth Proportional to 346.94, 481.25 and 328.49

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Solution

The fourth proportional to 346.94, 481.25 and 328.49 is: 455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.94 : 481.25 = 328.49 : x
  2. Step 2: Convert to fraction form
    346.94/481.25 = 328.49/x
  3. Step 3: Cross multiply
    346.94x = 481.25 × 328.49
  4. Step 4: Simplify right side
    346.94x = 158,081.76
  5. Step 5: Solve for x
    x = 158,081.76/346.94
  6. Step 6: Final answer
    x = 455.65

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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.