Home / 1,258.23-1,887.17-392.25

Finding the Fourth Proportional to 1,258.23, 1,887.17 and 392.25

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Solution

The fourth proportional to 1,258.23, 1,887.17 and 392.25 is: 588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.23 : 1,887.17 = 392.25 : x
  2. Step 2: Convert to fraction form
    1,258.23/1,887.17 = 392.25/x
  3. Step 3: Cross multiply
    1,258.23x = 1,887.17 × 392.25
  4. Step 4: Simplify right side
    1,258.23x = 740,240.47
  5. Step 5: Solve for x
    x = 740,240.47/1,258.23
  6. Step 6: Final answer
    x = 588.32

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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.