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Finding the Fourth Proportional to 837.82, 1,155.63 and 575.38

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Solution

The fourth proportional to 837.82, 1,155.63 and 575.38 is: 793.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.82 : 1,155.63 = 575.38 : x
  2. Step 2: Convert to fraction form
    837.82/1,155.63 = 575.38/x
  3. Step 3: Cross multiply
    837.82x = 1,155.63 × 575.38
  4. Step 4: Simplify right side
    837.82x = 664,926.39
  5. Step 5: Solve for x
    x = 664,926.39/837.82
  6. Step 6: Final answer
    x = 793.64

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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.