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Finding the Fourth Proportional to 889.75, 1,335.17 and 376.75

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Solution

The fourth proportional to 889.75, 1,335.17 and 376.75 is: 565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.75 : 1,335.17 = 376.75 : x
  2. Step 2: Convert to fraction form
    889.75/1,335.17 = 376.75/x
  3. Step 3: Cross multiply
    889.75x = 1,335.17 × 376.75
  4. Step 4: Simplify right side
    889.75x = 503,025.30
  5. Step 5: Solve for x
    x = 503,025.30/889.75
  6. Step 6: Final answer
    x = 565.36

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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.