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Finding the Fourth Proportional to 586.86, 809.85 and 324.87

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Solution

The fourth proportional to 586.86, 809.85 and 324.87 is: 448.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.86 : 809.85 = 324.87 : x
  2. Step 2: Convert to fraction form
    586.86/809.85 = 324.87/x
  3. Step 3: Cross multiply
    586.86x = 809.85 × 324.87
  4. Step 4: Simplify right side
    586.86x = 263,095.97
  5. Step 5: Solve for x
    x = 263,095.97/586.86
  6. Step 6: Final answer
    x = 448.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.