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Finding the Fourth Proportional to 407.67, 606.60 and 406.31

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Solution

The fourth proportional to 407.67, 606.60 and 406.31 is: 604.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.67 : 606.60 = 406.31 : x
  2. Step 2: Convert to fraction form
    407.67/606.60 = 406.31/x
  3. Step 3: Cross multiply
    407.67x = 606.60 × 406.31
  4. Step 4: Simplify right side
    407.67x = 246,464.61
  5. Step 5: Solve for x
    x = 246,464.61/407.67
  6. Step 6: Final answer
    x = 604.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.