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Finding the Fourth Proportional to 604.48, 833.60 and 408.20

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Solution

The fourth proportional to 604.48, 833.60 and 408.20 is: 562.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.48 : 833.60 = 408.20 : x
  2. Step 2: Convert to fraction form
    604.48/833.60 = 408.20/x
  3. Step 3: Cross multiply
    604.48x = 833.60 × 408.20
  4. Step 4: Simplify right side
    604.48x = 340,275.52
  5. Step 5: Solve for x
    x = 340,275.52/604.48
  6. Step 6: Final answer
    x = 562.92

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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.