Home / 1,110.50-1,532.40-668.36

Finding the Fourth Proportional to 1,110.50, 1,532.40 and 668.36

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Solution

The fourth proportional to 1,110.50, 1,532.40 and 668.36 is: 922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.50 : 1,532.40 = 668.36 : x
  2. Step 2: Convert to fraction form
    1,110.50/1,532.40 = 668.36/x
  3. Step 3: Cross multiply
    1,110.50x = 1,532.40 × 668.36
  4. Step 4: Simplify right side
    1,110.50x = 1,024,194.86
  5. Step 5: Solve for x
    x = 1,024,194.86/1,110.50
  6. Step 6: Final answer
    x = 922.28

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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.