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Finding the Fourth Proportional to 482.60, 665.99 and 272.81

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Solution

The fourth proportional to 482.60, 665.99 and 272.81 is: 376.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.60 : 665.99 = 272.81 : x
  2. Step 2: Convert to fraction form
    482.60/665.99 = 272.81/x
  3. Step 3: Cross multiply
    482.60x = 665.99 × 272.81
  4. Step 4: Simplify right side
    482.60x = 181,684.04
  5. Step 5: Solve for x
    x = 181,684.04/482.60
  6. Step 6: Final answer
    x = 376.47

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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.