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Finding the Fourth Proportional to 818.14, 1,226.94 and 453.10

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Solution

The fourth proportional to 818.14, 1,226.94 and 453.10 is: 679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.14 : 1,226.94 = 453.10 : x
  2. Step 2: Convert to fraction form
    818.14/1,226.94 = 453.10/x
  3. Step 3: Cross multiply
    818.14x = 1,226.94 × 453.10
  4. Step 4: Simplify right side
    818.14x = 555,926.51
  5. Step 5: Solve for x
    x = 555,926.51/818.14
  6. Step 6: Final answer
    x = 679.50

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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.