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Finding the Fourth Proportional to 837.11, 1,155.18 and 464.09

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Solution

The fourth proportional to 837.11, 1,155.18 and 464.09 is: 640.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.11 : 1,155.18 = 464.09 : x
  2. Step 2: Convert to fraction form
    837.11/1,155.18 = 464.09/x
  3. Step 3: Cross multiply
    837.11x = 1,155.18 × 464.09
  4. Step 4: Simplify right side
    837.11x = 536,099.39
  5. Step 5: Solve for x
    x = 536,099.39/837.11
  6. Step 6: Final answer
    x = 640.42

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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.