Home / 1,226.16-1,839.28-446.32

Finding the Fourth Proportional to 1,226.16, 1,839.28 and 446.32

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Solution

The fourth proportional to 1,226.16, 1,839.28 and 446.32 is: 669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.16 : 1,839.28 = 446.32 : x
  2. Step 2: Convert to fraction form
    1,226.16/1,839.28 = 446.32/x
  3. Step 3: Cross multiply
    1,226.16x = 1,839.28 × 446.32
  4. Step 4: Simplify right side
    1,226.16x = 820,907.45
  5. Step 5: Solve for x
    x = 820,907.45/1,226.16
  6. Step 6: Final answer
    x = 669.49

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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.