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Finding the Fourth Proportional to 902.35, 1,352.85 and 577.09

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Solution

The fourth proportional to 902.35, 1,352.85 and 577.09 is: 865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.35 : 1,352.85 = 577.09 : x
  2. Step 2: Convert to fraction form
    902.35/1,352.85 = 577.09/x
  3. Step 3: Cross multiply
    902.35x = 1,352.85 × 577.09
  4. Step 4: Simplify right side
    902.35x = 780,716.21
  5. Step 5: Solve for x
    x = 780,716.21/902.35
  6. Step 6: Final answer
    x = 865.20

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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.