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Finding the Fourth Proportional to 906.46, 1,252.06 and 670.75

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Solution

The fourth proportional to 906.46, 1,252.06 and 670.75 is: 926.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.46 : 1,252.06 = 670.75 : x
  2. Step 2: Convert to fraction form
    906.46/1,252.06 = 670.75/x
  3. Step 3: Cross multiply
    906.46x = 1,252.06 × 670.75
  4. Step 4: Simplify right side
    906.46x = 839,814.44
  5. Step 5: Solve for x
    x = 839,814.44/906.46
  6. Step 6: Final answer
    x = 926.48

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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.