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Finding the Fourth Proportional to 482.71, 723.68 and 208.61

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Solution

The fourth proportional to 482.71, 723.68 and 208.61 is: 312.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.71 : 723.68 = 208.61 : x
  2. Step 2: Convert to fraction form
    482.71/723.68 = 208.61/x
  3. Step 3: Cross multiply
    482.71x = 723.68 × 208.61
  4. Step 4: Simplify right side
    482.71x = 150,966.50
  5. Step 5: Solve for x
    x = 150,966.50/482.71
  6. Step 6: Final answer
    x = 312.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.