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Finding the Fourth Proportional to 481.75, 664.61 and 304.76

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Solution

The fourth proportional to 481.75, 664.61 and 304.76 is: 420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.75 : 664.61 = 304.76 : x
  2. Step 2: Convert to fraction form
    481.75/664.61 = 304.76/x
  3. Step 3: Cross multiply
    481.75x = 664.61 × 304.76
  4. Step 4: Simplify right side
    481.75x = 202,546.68
  5. Step 5: Solve for x
    x = 202,546.68/481.75
  6. Step 6: Final answer
    x = 420.44

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Find fourth proportional to 240.87, 332.30 and 152.38
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Double scale
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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.