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Finding the Fourth Proportional to 422.77, 583.49 and 248.17

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Solution

The fourth proportional to 422.77, 583.49 and 248.17 is: 342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.77 : 583.49 = 248.17 : x
  2. Step 2: Convert to fraction form
    422.77/583.49 = 248.17/x
  3. Step 3: Cross multiply
    422.77x = 583.49 × 248.17
  4. Step 4: Simplify right side
    422.77x = 144,803.47
  5. Step 5: Solve for x
    x = 144,803.47/422.77
  6. Step 6: Final answer
    x = 342.51

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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.