Home / 1,491.15-2,236.66-451.11

Finding the Fourth Proportional to 1,491.15, 2,236.66 and 451.11

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Solution

The fourth proportional to 1,491.15, 2,236.66 and 451.11 is: 676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.15 : 2,236.66 = 451.11 : x
  2. Step 2: Convert to fraction form
    1,491.15/2,236.66 = 451.11/x
  3. Step 3: Cross multiply
    1,491.15x = 2,236.66 × 451.11
  4. Step 4: Simplify right side
    1,491.15x = 1,008,973.76
  5. Step 5: Solve for x
    x = 1,008,973.76/1,491.15
  6. Step 6: Final answer
    x = 676.64

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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.