Home / 1,110.58-1,531.89-668.62

Finding the Fourth Proportional to 1,110.58, 1,531.89 and 668.62

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Solution

The fourth proportional to 1,110.58, 1,531.89 and 668.62 is: 922.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.58 : 1,531.89 = 668.62 : x
  2. Step 2: Convert to fraction form
    1,110.58/1,531.89 = 668.62/x
  3. Step 3: Cross multiply
    1,110.58x = 1,531.89 × 668.62
  4. Step 4: Simplify right side
    1,110.58x = 1,024,252.29
  5. Step 5: Solve for x
    x = 1,024,252.29/1,110.58
  6. Step 6: Final answer
    x = 922.27

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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.