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Finding the Fourth Proportional to 850.19, 1,171.98 and 554.94

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Solution

The fourth proportional to 850.19, 1,171.98 and 554.94 is: 764.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.19 : 1,171.98 = 554.94 : x
  2. Step 2: Convert to fraction form
    850.19/1,171.98 = 554.94/x
  3. Step 3: Cross multiply
    850.19x = 1,171.98 × 554.94
  4. Step 4: Simplify right side
    850.19x = 650,378.58
  5. Step 5: Solve for x
    x = 650,378.58/850.19
  6. Step 6: Final answer
    x = 764.98

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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.