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Finding the Fourth Proportional to 482.37, 723.69 and 208.49

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Solution

The fourth proportional to 482.37, 723.69 and 208.49 is: 312.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.37 : 723.69 = 208.49 : x
  2. Step 2: Convert to fraction form
    482.37/723.69 = 208.49/x
  3. Step 3: Cross multiply
    482.37x = 723.69 × 208.49
  4. Step 4: Simplify right side
    482.37x = 150,878.51
  5. Step 5: Solve for x
    x = 150,878.51/482.37
  6. Step 6: Final answer
    x = 312.79

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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.