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Finding the Fourth Proportional to 31.31, 46.93 and 16.05

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Solution

The fourth proportional to 31.31, 46.93 and 16.05 is: 24.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31.31 : 46.93 = 16.05 : x
  2. Step 2: Convert to fraction form
    31.31/46.93 = 16.05/x
  3. Step 3: Cross multiply
    31.31x = 46.93 × 16.05
  4. Step 4: Simplify right side
    31.31x = 753.23
  5. Step 5: Solve for x
    x = 753.23/31.31
  6. Step 6: Final answer
    x = 24.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.