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Finding the Fourth Proportional to 850.15, 1,276.12 and 753.25

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Solution

The fourth proportional to 850.15, 1,276.12 and 753.25 is: 1,130.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.15 : 1,276.12 = 753.25 : x
  2. Step 2: Convert to fraction form
    850.15/1,276.12 = 753.25/x
  3. Step 3: Cross multiply
    850.15x = 1,276.12 × 753.25
  4. Step 4: Simplify right side
    850.15x = 961,237.39
  5. Step 5: Solve for x
    x = 961,237.39/850.15
  6. Step 6: Final answer
    x = 1,130.67

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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.