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Finding the Fourth Proportional to 906.97, 1,252.11 and 612.76

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Solution

The fourth proportional to 906.97, 1,252.11 and 612.76 is: 845.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.97 : 1,252.11 = 612.76 : x
  2. Step 2: Convert to fraction form
    906.97/1,252.11 = 612.76/x
  3. Step 3: Cross multiply
    906.97x = 1,252.11 × 612.76
  4. Step 4: Simplify right side
    906.97x = 767,242.92
  5. Step 5: Solve for x
    x = 767,242.92/906.97
  6. Step 6: Final answer
    x = 845.94

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.