Home / 1,258.16-1,736.28-698.66

Finding the Fourth Proportional to 1,258.16, 1,736.28 and 698.66

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Solution

The fourth proportional to 1,258.16, 1,736.28 and 698.66 is: 964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.16 : 1,736.28 = 698.66 : x
  2. Step 2: Convert to fraction form
    1,258.16/1,736.28 = 698.66/x
  3. Step 3: Cross multiply
    1,258.16x = 1,736.28 × 698.66
  4. Step 4: Simplify right side
    1,258.16x = 1,213,076.98
  5. Step 5: Solve for x
    x = 1,213,076.98/1,258.16
  6. Step 6: Final answer
    x = 964.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.