Home / 1,158.27-1,736.32-427.65

Finding the Fourth Proportional to 1,158.27, 1,736.32 and 427.65

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Solution

The fourth proportional to 1,158.27, 1,736.32 and 427.65 is: 641.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.27 : 1,736.32 = 427.65 : x
  2. Step 2: Convert to fraction form
    1,158.27/1,736.32 = 427.65/x
  3. Step 3: Cross multiply
    1,158.27x = 1,736.32 × 427.65
  4. Step 4: Simplify right side
    1,158.27x = 742,537.25
  5. Step 5: Solve for x
    x = 742,537.25/1,158.27
  6. Step 6: Final answer
    x = 641.07

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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.