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Finding the Fourth Proportional to 906.04, 1,249.86 and 556.12

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Solution

The fourth proportional to 906.04, 1,249.86 and 556.12 is: 767.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.04 : 1,249.86 = 556.12 : x
  2. Step 2: Convert to fraction form
    906.04/1,249.86 = 556.12/x
  3. Step 3: Cross multiply
    906.04x = 1,249.86 × 556.12
  4. Step 4: Simplify right side
    906.04x = 695,072.14
  5. Step 5: Solve for x
    x = 695,072.14/906.04
  6. Step 6: Final answer
    x = 767.15

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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.