Home / 1,220.32-1,829.94-440.02

Finding the Fourth Proportional to 1,220.32, 1,829.94 and 440.02

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Solution

The fourth proportional to 1,220.32, 1,829.94 and 440.02 is: 659.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.32 : 1,829.94 = 440.02 : x
  2. Step 2: Convert to fraction form
    1,220.32/1,829.94 = 440.02/x
  3. Step 3: Cross multiply
    1,220.32x = 1,829.94 × 440.02
  4. Step 4: Simplify right side
    1,220.32x = 805,210.20
  5. Step 5: Solve for x
    x = 805,210.20/1,220.32
  6. Step 6: Final answer
    x = 659.84

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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.