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Finding the Fourth Proportional to 324.08, 443.48 and 317.36

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Solution

The fourth proportional to 324.08, 443.48 and 317.36 is: 434.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.08 : 443.48 = 317.36 : x
  2. Step 2: Convert to fraction form
    324.08/443.48 = 317.36/x
  3. Step 3: Cross multiply
    324.08x = 443.48 × 317.36
  4. Step 4: Simplify right side
    324.08x = 140,742.81
  5. Step 5: Solve for x
    x = 140,742.81/324.08
  6. Step 6: Final answer
    x = 434.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.