Home / 1,071.36-1,478.29-605.61

Finding the Fourth Proportional to 1,071.36, 1,478.29 and 605.61

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Solution

The fourth proportional to 1,071.36, 1,478.29 and 605.61 is: 835.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.36 : 1,478.29 = 605.61 : x
  2. Step 2: Convert to fraction form
    1,071.36/1,478.29 = 605.61/x
  3. Step 3: Cross multiply
    1,071.36x = 1,478.29 × 605.61
  4. Step 4: Simplify right side
    1,071.36x = 895,270.90
  5. Step 5: Solve for x
    x = 895,270.90/1,071.36
  6. Step 6: Final answer
    x = 835.64

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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.