Home / 1,229.85-1,844.57-612.90

Finding the Fourth Proportional to 1,229.85, 1,844.57 and 612.90

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Solution

The fourth proportional to 1,229.85, 1,844.57 and 612.90 is: 919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.85 : 1,844.57 = 612.90 : x
  2. Step 2: Convert to fraction form
    1,229.85/1,844.57 = 612.90/x
  3. Step 3: Cross multiply
    1,229.85x = 1,844.57 × 612.90
  4. Step 4: Simplify right side
    1,229.85x = 1,130,538.49
  5. Step 5: Solve for x
    x = 1,130,538.49/1,229.85
  6. Step 6: Final answer
    x = 919.25

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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.