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Finding the Fourth Proportional to 606.39, 910.24 and 485.39

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Solution

The fourth proportional to 606.39, 910.24 and 485.39 is: 728.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.39 : 910.24 = 485.39 : x
  2. Step 2: Convert to fraction form
    606.39/910.24 = 485.39/x
  3. Step 3: Cross multiply
    606.39x = 910.24 × 485.39
  4. Step 4: Simplify right side
    606.39x = 441,822.46
  5. Step 5: Solve for x
    x = 441,822.46/606.39
  6. Step 6: Final answer
    x = 728.62

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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.