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Finding the Fourth Proportional to 906.63, 1,250.64 and 658.32

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Solution

The fourth proportional to 906.63, 1,250.64 and 658.32 is: 908.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.63 : 1,250.64 = 658.32 : x
  2. Step 2: Convert to fraction form
    906.63/1,250.64 = 658.32/x
  3. Step 3: Cross multiply
    906.63x = 1,250.64 × 658.32
  4. Step 4: Simplify right side
    906.63x = 823,321.32
  5. Step 5: Solve for x
    x = 823,321.32/906.63
  6. Step 6: Final answer
    x = 908.11

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1.5x scale

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.