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Finding the Fourth Proportional to 282.62, 421.44 and 263.14

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Solution

The fourth proportional to 282.62, 421.44 and 263.14 is: 392.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.62 : 421.44 = 263.14 : x
  2. Step 2: Convert to fraction form
    282.62/421.44 = 263.14/x
  3. Step 3: Cross multiply
    282.62x = 421.44 × 263.14
  4. Step 4: Simplify right side
    282.62x = 110,897.72
  5. Step 5: Solve for x
    x = 110,897.72/282.62
  6. Step 6: Final answer
    x = 392.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.