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Finding the Fourth Proportional to 422.77, 583.83 and 275.48

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Solution

The fourth proportional to 422.77, 583.83 and 275.48 is: 380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.77 : 583.83 = 275.48 : x
  2. Step 2: Convert to fraction form
    422.77/583.83 = 275.48/x
  3. Step 3: Cross multiply
    422.77x = 583.83 × 275.48
  4. Step 4: Simplify right side
    422.77x = 160,836.82
  5. Step 5: Solve for x
    x = 160,836.82/422.77
  6. Step 6: Final answer
    x = 380.44

Related Problems

Find fourth proportional to 211.38, 291.92 and 137.74
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Double scale
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Similar ratio
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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.