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Finding the Fourth Proportional to 482.76, 723.94 and 287.82

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Solution

The fourth proportional to 482.76, 723.94 and 287.82 is: 431.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.76 : 723.94 = 287.82 : x
  2. Step 2: Convert to fraction form
    482.76/723.94 = 287.82/x
  3. Step 3: Cross multiply
    482.76x = 723.94 × 287.82
  4. Step 4: Simplify right side
    482.76x = 208,363.69
  5. Step 5: Solve for x
    x = 208,363.69/482.76
  6. Step 6: Final answer
    x = 431.61

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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.