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Finding the Fourth Proportional to 850.49, 1,275.66 and 234.18

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Solution

The fourth proportional to 850.49, 1,275.66 and 234.18 is: 351.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.49 : 1,275.66 = 234.18 : x
  2. Step 2: Convert to fraction form
    850.49/1,275.66 = 234.18/x
  3. Step 3: Cross multiply
    850.49x = 1,275.66 × 234.18
  4. Step 4: Simplify right side
    850.49x = 298,734.06
  5. Step 5: Solve for x
    x = 298,734.06/850.49
  6. Step 6: Final answer
    x = 351.25

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Double scale
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1.5x scale

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.