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Finding the Fourth Proportional to 353.08, 486.24 and 265.60

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Solution

The fourth proportional to 353.08, 486.24 and 265.60 is: 365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.08 : 486.24 = 265.60 : x
  2. Step 2: Convert to fraction form
    353.08/486.24 = 265.60/x
  3. Step 3: Cross multiply
    353.08x = 486.24 × 265.60
  4. Step 4: Simplify right side
    353.08x = 129,145.34
  5. Step 5: Solve for x
    x = 129,145.34/353.08
  6. Step 6: Final answer
    x = 365.77

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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.