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Finding the Fourth Proportional to 324.36, 484.53 and 291.81

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Solution

The fourth proportional to 324.36, 484.53 and 291.81 is: 435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.36 : 484.53 = 291.81 : x
  2. Step 2: Convert to fraction form
    324.36/484.53 = 291.81/x
  3. Step 3: Cross multiply
    324.36x = 484.53 × 291.81
  4. Step 4: Simplify right side
    324.36x = 141,387.55
  5. Step 5: Solve for x
    x = 141,387.55/324.36
  6. Step 6: Final answer
    x = 435.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.