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Finding the Fourth Proportional to 887.29, 1,329.78 and 366.70

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Solution

The fourth proportional to 887.29, 1,329.78 and 366.70 is: 549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.29 : 1,329.78 = 366.70 : x
  2. Step 2: Convert to fraction form
    887.29/1,329.78 = 366.70/x
  3. Step 3: Cross multiply
    887.29x = 1,329.78 × 366.70
  4. Step 4: Simplify right side
    887.29x = 487,630.33
  5. Step 5: Solve for x
    x = 487,630.33/887.29
  6. Step 6: Final answer
    x = 549.57

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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.