Home / 1,156.11-1,734.98-668.49

Finding the Fourth Proportional to 1,156.11, 1,734.98 and 668.49

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Solution

The fourth proportional to 1,156.11, 1,734.98 and 668.49 is: 1,003.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.11 : 1,734.98 = 668.49 : x
  2. Step 2: Convert to fraction form
    1,156.11/1,734.98 = 668.49/x
  3. Step 3: Cross multiply
    1,156.11x = 1,734.98 × 668.49
  4. Step 4: Simplify right side
    1,156.11x = 1,159,813.44
  5. Step 5: Solve for x
    x = 1,159,813.44/1,156.11
  6. Step 6: Final answer
    x = 1,003.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.