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Finding the Fourth Proportional to 887.31, 1,329.90 and 367.15

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Solution

The fourth proportional to 887.31, 1,329.90 and 367.15 is: 550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.31 : 1,329.90 = 367.15 : x
  2. Step 2: Convert to fraction form
    887.31/1,329.90 = 367.15/x
  3. Step 3: Cross multiply
    887.31x = 1,329.90 × 367.15
  4. Step 4: Simplify right side
    887.31x = 488,272.79
  5. Step 5: Solve for x
    x = 488,272.79/887.31
  6. Step 6: Final answer
    x = 550.28

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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.