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Finding the Fourth Proportional to 824.20, 1,236.18 and 276.37

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Solution

The fourth proportional to 824.20, 1,236.18 and 276.37 is: 414.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.20 : 1,236.18 = 276.37 : x
  2. Step 2: Convert to fraction form
    824.20/1,236.18 = 276.37/x
  3. Step 3: Cross multiply
    824.20x = 1,236.18 × 276.37
  4. Step 4: Simplify right side
    824.20x = 341,643.07
  5. Step 5: Solve for x
    x = 341,643.07/824.20
  6. Step 6: Final answer
    x = 414.51

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.