Home / 1,220.32-1,829.67-439.93

Finding the Fourth Proportional to 1,220.32, 1,829.67 and 439.93

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Solution

The fourth proportional to 1,220.32, 1,829.67 and 439.93 is: 659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.32 : 1,829.67 = 439.93 : x
  2. Step 2: Convert to fraction form
    1,220.32/1,829.67 = 439.93/x
  3. Step 3: Cross multiply
    1,220.32x = 1,829.67 × 439.93
  4. Step 4: Simplify right side
    1,220.32x = 804,926.72
  5. Step 5: Solve for x
    x = 804,926.72/1,220.32
  6. Step 6: Final answer
    x = 659.60

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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.