Home / 1,140.27-1,573.48-668.11

Finding the Fourth Proportional to 1,140.27, 1,573.48 and 668.11

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Solution

The fourth proportional to 1,140.27, 1,573.48 and 668.11 is: 921.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.27 : 1,573.48 = 668.11 : x
  2. Step 2: Convert to fraction form
    1,140.27/1,573.48 = 668.11/x
  3. Step 3: Cross multiply
    1,140.27x = 1,573.48 × 668.11
  4. Step 4: Simplify right side
    1,140.27x = 1,051,249.86
  5. Step 5: Solve for x
    x = 1,051,249.86/1,140.27
  6. Step 6: Final answer
    x = 921.93

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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.