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Finding the Fourth Proportional to 422.66, 583.33 and 265.45

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Solution

The fourth proportional to 422.66, 583.33 and 265.45 is: 366.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.66 : 583.33 = 265.45 : x
  2. Step 2: Convert to fraction form
    422.66/583.33 = 265.45/x
  3. Step 3: Cross multiply
    422.66x = 583.33 × 265.45
  4. Step 4: Simplify right side
    422.66x = 154,844.95
  5. Step 5: Solve for x
    x = 154,844.95/422.66
  6. Step 6: Final answer
    x = 366.36

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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.