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Finding the Fourth Proportional to 836.68, 1,254.93 and 220.36

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Solution

The fourth proportional to 836.68, 1,254.93 and 220.36 is: 330.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.68 : 1,254.93 = 220.36 : x
  2. Step 2: Convert to fraction form
    836.68/1,254.93 = 220.36/x
  3. Step 3: Cross multiply
    836.68x = 1,254.93 × 220.36
  4. Step 4: Simplify right side
    836.68x = 276,536.37
  5. Step 5: Solve for x
    x = 276,536.37/836.68
  6. Step 6: Final answer
    x = 330.52

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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.