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Finding the Fourth Proportional to 837.26, 1,155.43 and 464.22

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Solution

The fourth proportional to 837.26, 1,155.43 and 464.22 is: 640.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.26 : 1,155.43 = 464.22 : x
  2. Step 2: Convert to fraction form
    837.26/1,155.43 = 464.22/x
  3. Step 3: Cross multiply
    837.26x = 1,155.43 × 464.22
  4. Step 4: Simplify right side
    837.26x = 536,373.42
  5. Step 5: Solve for x
    x = 536,373.42/837.26
  6. Step 6: Final answer
    x = 640.63

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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.