Home / 1,071.18-1,478.21-599.12

Finding the Fourth Proportional to 1,071.18, 1,478.21 and 599.12

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Solution

The fourth proportional to 1,071.18, 1,478.21 and 599.12 is: 826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.18 : 1,478.21 = 599.12 : x
  2. Step 2: Convert to fraction form
    1,071.18/1,478.21 = 599.12/x
  3. Step 3: Cross multiply
    1,071.18x = 1,478.21 × 599.12
  4. Step 4: Simplify right side
    1,071.18x = 885,625.18
  5. Step 5: Solve for x
    x = 885,625.18/1,071.18
  6. Step 6: Final answer
    x = 826.78

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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.