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Finding the Fourth Proportional to 482.79, 666.22 and 272.95

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Solution

The fourth proportional to 482.79, 666.22 and 272.95 is: 376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.79 : 666.22 = 272.95 : x
  2. Step 2: Convert to fraction form
    482.79/666.22 = 272.95/x
  3. Step 3: Cross multiply
    482.79x = 666.22 × 272.95
  4. Step 4: Simplify right side
    482.79x = 181,844.41
  5. Step 5: Solve for x
    x = 181,844.41/482.79
  6. Step 6: Final answer
    x = 376.66

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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.