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Finding the Fourth Proportional to 316.44, 474.88 and 235.02

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Solution

The fourth proportional to 316.44, 474.88 and 235.02 is: 352.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.44 : 474.88 = 235.02 : x
  2. Step 2: Convert to fraction form
    316.44/474.88 = 235.02/x
  3. Step 3: Cross multiply
    316.44x = 474.88 × 235.02
  4. Step 4: Simplify right side
    316.44x = 111,606.30
  5. Step 5: Solve for x
    x = 111,606.30/316.44
  6. Step 6: Final answer
    x = 352.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.