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Finding the Fourth Proportional to 352.74, 486.48 and 258.33

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Solution

The fourth proportional to 352.74, 486.48 and 258.33 is: 356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.74 : 486.48 = 258.33 : x
  2. Step 2: Convert to fraction form
    352.74/486.48 = 258.33/x
  3. Step 3: Cross multiply
    352.74x = 486.48 × 258.33
  4. Step 4: Simplify right side
    352.74x = 125,672.38
  5. Step 5: Solve for x
    x = 125,672.38/352.74
  6. Step 6: Final answer
    x = 356.27

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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.