Home / 1,110.07-1,531.90-668.00

Finding the Fourth Proportional to 1,110.07, 1,531.90 and 668.00

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Solution

The fourth proportional to 1,110.07, 1,531.90 and 668.00 is: 921.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.07 : 1,531.90 = 668.00 : x
  2. Step 2: Convert to fraction form
    1,110.07/1,531.90 = 668.00/x
  3. Step 3: Cross multiply
    1,110.07x = 1,531.90 × 668.00
  4. Step 4: Simplify right side
    1,110.07x = 1,023,298.20
  5. Step 5: Solve for x
    x = 1,023,298.20/1,110.07
  6. Step 6: Final answer
    x = 921.83

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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.