Home / 1,485.35-2,228.79-664.16

Finding the Fourth Proportional to 1,485.35, 2,228.79 and 664.16

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Solution

The fourth proportional to 1,485.35, 2,228.79 and 664.16 is: 996.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.35 : 2,228.79 = 664.16 : x
  2. Step 2: Convert to fraction form
    1,485.35/2,228.79 = 664.16/x
  3. Step 3: Cross multiply
    1,485.35x = 2,228.79 × 664.16
  4. Step 4: Simplify right side
    1,485.35x = 1,480,273.17
  5. Step 5: Solve for x
    x = 1,480,273.17/1,485.35
  6. Step 6: Final answer
    x = 996.58

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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.