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Finding the Fourth Proportional to 850.18, 1,173.18 and 554.98

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Solution

The fourth proportional to 850.18, 1,173.18 and 554.98 is: 765.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.18 : 1,173.18 = 554.98 : x
  2. Step 2: Convert to fraction form
    850.18/1,173.18 = 554.98/x
  3. Step 3: Cross multiply
    850.18x = 1,173.18 × 554.98
  4. Step 4: Simplify right side
    850.18x = 651,091.44
  5. Step 5: Solve for x
    x = 651,091.44/850.18
  6. Step 6: Final answer
    x = 765.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.