Home / 1,485.26-2,228.40-663.62

Finding the Fourth Proportional to 1,485.26, 2,228.40 and 663.62

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Solution

The fourth proportional to 1,485.26, 2,228.40 and 663.62 is: 995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.26 : 2,228.40 = 663.62 : x
  2. Step 2: Convert to fraction form
    1,485.26/2,228.40 = 663.62/x
  3. Step 3: Cross multiply
    1,485.26x = 2,228.40 × 663.62
  4. Step 4: Simplify right side
    1,485.26x = 1,478,799.67
  5. Step 5: Solve for x
    x = 1,478,799.67/1,485.26
  6. Step 6: Final answer
    x = 995.65

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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.