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Finding the Fourth Proportional to 482.28, 665.64 and 272.52

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Solution

The fourth proportional to 482.28, 665.64 and 272.52 is: 376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.28 : 665.64 = 272.52 : x
  2. Step 2: Convert to fraction form
    482.28/665.64 = 272.52/x
  3. Step 3: Cross multiply
    482.28x = 665.64 × 272.52
  4. Step 4: Simplify right side
    482.28x = 181,400.21
  5. Step 5: Solve for x
    x = 181,400.21/482.28
  6. Step 6: Final answer
    x = 376.13

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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.