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Finding the Fourth Proportional to 482.50, 723.72 and 208.41

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Solution

The fourth proportional to 482.50, 723.72 and 208.41 is: 312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.50 : 723.72 = 208.41 : x
  2. Step 2: Convert to fraction form
    482.50/723.72 = 208.41/x
  3. Step 3: Cross multiply
    482.50x = 723.72 × 208.41
  4. Step 4: Simplify right side
    482.50x = 150,830.49
  5. Step 5: Solve for x
    x = 150,830.49/482.50
  6. Step 6: Final answer
    x = 312.60

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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.