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Finding the Fourth Proportional to 836.49, 1,254.74 and 220.19

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Solution

The fourth proportional to 836.49, 1,254.74 and 220.19 is: 330.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.49 : 1,254.74 = 220.19 : x
  2. Step 2: Convert to fraction form
    836.49/1,254.74 = 220.19/x
  3. Step 3: Cross multiply
    836.49x = 1,254.74 × 220.19
  4. Step 4: Simplify right side
    836.49x = 276,280.10
  5. Step 5: Solve for x
    x = 276,280.10/836.49
  6. Step 6: Final answer
    x = 330.29

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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.