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Finding the Fourth Proportional to 790.09, 1,183.51 and 635.18

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Solution

The fourth proportional to 790.09, 1,183.51 and 635.18 is: 951.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.09 : 1,183.51 = 635.18 : x
  2. Step 2: Convert to fraction form
    790.09/1,183.51 = 635.18/x
  3. Step 3: Cross multiply
    790.09x = 1,183.51 × 635.18
  4. Step 4: Simplify right side
    790.09x = 751,741.88
  5. Step 5: Solve for x
    x = 751,741.88/790.09
  6. Step 6: Final answer
    x = 951.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.