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Finding the Fourth Proportional to 408.08, 562.56 and 260.60

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Solution

The fourth proportional to 408.08, 562.56 and 260.60 is: 359.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.08 : 562.56 = 260.60 : x
  2. Step 2: Convert to fraction form
    408.08/562.56 = 260.60/x
  3. Step 3: Cross multiply
    408.08x = 562.56 × 260.60
  4. Step 4: Simplify right side
    408.08x = 146,603.14
  5. Step 5: Solve for x
    x = 146,603.14/408.08
  6. Step 6: Final answer
    x = 359.25

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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.