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Finding the Fourth Proportional to 896.25, 1,344.37 and 402.53

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Solution

The fourth proportional to 896.25, 1,344.37 and 402.53 is: 603.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.25 : 1,344.37 = 402.53 : x
  2. Step 2: Convert to fraction form
    896.25/1,344.37 = 402.53/x
  3. Step 3: Cross multiply
    896.25x = 1,344.37 × 402.53
  4. Step 4: Simplify right side
    896.25x = 541,149.26
  5. Step 5: Solve for x
    x = 541,149.26/896.25
  6. Step 6: Final answer
    x = 603.79

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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.