Home / 1,226.24-1,839.36-456.32

Finding the Fourth Proportional to 1,226.24, 1,839.36 and 456.32

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Solution

The fourth proportional to 1,226.24, 1,839.36 and 456.32 is: 684.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.24 : 1,839.36 = 456.32 : x
  2. Step 2: Convert to fraction form
    1,226.24/1,839.36 = 456.32/x
  3. Step 3: Cross multiply
    1,226.24x = 1,839.36 × 456.32
  4. Step 4: Simplify right side
    1,226.24x = 839,336.76
  5. Step 5: Solve for x
    x = 839,336.76/1,226.24
  6. Step 6: Final answer
    x = 684.48

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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.