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Finding the Fourth Proportional to 25.31, 35.06 and 23.39

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Solution

The fourth proportional to 25.31, 35.06 and 23.39 is: 32.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.31 : 35.06 = 23.39 : x
  2. Step 2: Convert to fraction form
    25.31/35.06 = 23.39/x
  3. Step 3: Cross multiply
    25.31x = 35.06 × 23.39
  4. Step 4: Simplify right side
    25.31x = 819.76
  5. Step 5: Solve for x
    x = 819.76/25.31
  6. Step 6: Final answer
    x = 32.40

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.