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Finding the Fourth Proportional to 586.14, 809.58 and 439.41

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Solution

The fourth proportional to 586.14, 809.58 and 439.41 is: 606.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.14 : 809.58 = 439.41 : x
  2. Step 2: Convert to fraction form
    586.14/809.58 = 439.41/x
  3. Step 3: Cross multiply
    586.14x = 809.58 × 439.41
  4. Step 4: Simplify right side
    586.14x = 355,737.55
  5. Step 5: Solve for x
    x = 355,737.55/586.14
  6. Step 6: Final answer
    x = 606.92

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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.