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Finding the Fourth Proportional to 482.22, 665.49 and 272.40

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Solution

The fourth proportional to 482.22, 665.49 and 272.40 is: 375.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.22 : 665.49 = 272.40 : x
  2. Step 2: Convert to fraction form
    482.22/665.49 = 272.40/x
  3. Step 3: Cross multiply
    482.22x = 665.49 × 272.40
  4. Step 4: Simplify right side
    482.22x = 181,279.48
  5. Step 5: Solve for x
    x = 181,279.48/482.22
  6. Step 6: Final answer
    x = 375.93

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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.