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Finding the Fourth Proportional to 906.62, 1,252.26 and 657.54

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Solution

The fourth proportional to 906.62, 1,252.26 and 657.54 is: 908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.62 : 1,252.26 = 657.54 : x
  2. Step 2: Convert to fraction form
    906.62/1,252.26 = 657.54/x
  3. Step 3: Cross multiply
    906.62x = 1,252.26 × 657.54
  4. Step 4: Simplify right side
    906.62x = 823,411.04
  5. Step 5: Solve for x
    x = 823,411.04/906.62
  6. Step 6: Final answer
    x = 908.22

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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.