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Finding the Fourth Proportional to 887.55, 1,329.49 and 847.45

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Solution

The fourth proportional to 887.55, 1,329.49 and 847.45 is: 1,269.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.55 : 1,329.49 = 847.45 : x
  2. Step 2: Convert to fraction form
    887.55/1,329.49 = 847.45/x
  3. Step 3: Cross multiply
    887.55x = 1,329.49 × 847.45
  4. Step 4: Simplify right side
    887.55x = 1,126,676.30
  5. Step 5: Solve for x
    x = 1,126,676.30/887.55
  6. Step 6: Final answer
    x = 1,269.42

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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.