Home / 1,157.18-1,736.45-427.27

Finding the Fourth Proportional to 1,157.18, 1,736.45 and 427.27

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Solution

The fourth proportional to 1,157.18, 1,736.45 and 427.27 is: 641.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.18 : 1,736.45 = 427.27 : x
  2. Step 2: Convert to fraction form
    1,157.18/1,736.45 = 427.27/x
  3. Step 3: Cross multiply
    1,157.18x = 1,736.45 × 427.27
  4. Step 4: Simplify right side
    1,157.18x = 741,929.72
  5. Step 5: Solve for x
    x = 741,929.72/1,157.18
  6. Step 6: Final answer
    x = 641.15

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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.