Home / 1,504.36-2,258.16-639.28

Finding the Fourth Proportional to 1,504.36, 2,258.16 and 639.28

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Solution

The fourth proportional to 1,504.36, 2,258.16 and 639.28 is: 959.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,504.36 : 2,258.16 = 639.28 : x
  2. Step 2: Convert to fraction form
    1,504.36/2,258.16 = 639.28/x
  3. Step 3: Cross multiply
    1,504.36x = 2,258.16 × 639.28
  4. Step 4: Simplify right side
    1,504.36x = 1,443,596.52
  5. Step 5: Solve for x
    x = 1,443,596.52/1,504.36
  6. Step 6: Final answer
    x = 959.61

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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.