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Finding the Fourth Proportional to 837.17, 1,155.30 and 464.15

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Solution

The fourth proportional to 837.17, 1,155.30 and 464.15 is: 640.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.17 : 1,155.30 = 464.15 : x
  2. Step 2: Convert to fraction form
    837.17/1,155.30 = 464.15/x
  3. Step 3: Cross multiply
    837.17x = 1,155.30 × 464.15
  4. Step 4: Simplify right side
    837.17x = 536,232.50
  5. Step 5: Solve for x
    x = 536,232.50/837.17
  6. Step 6: Final answer
    x = 640.53

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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.