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Finding the Fourth Proportional to 586.31, 809.12 and 324.35

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Solution

The fourth proportional to 586.31, 809.12 and 324.35 is: 447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.31 : 809.12 = 324.35 : x
  2. Step 2: Convert to fraction form
    586.31/809.12 = 324.35/x
  3. Step 3: Cross multiply
    586.31x = 809.12 × 324.35
  4. Step 4: Simplify right side
    586.31x = 262,432.40
  5. Step 5: Solve for x
    x = 262,432.40/586.31
  6. Step 6: Final answer
    x = 447.60

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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.