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Finding the Fourth Proportional to 15.62, 23.12 and 15.58

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Solution

The fourth proportional to 15.62, 23.12 and 15.58 is: 23.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.62 : 23.12 = 15.58 : x
  2. Step 2: Convert to fraction form
    15.62/23.12 = 15.58/x
  3. Step 3: Cross multiply
    15.62x = 23.12 × 15.58
  4. Step 4: Simplify right side
    15.62x = 360.07
  5. Step 5: Solve for x
    x = 360.07/15.62
  6. Step 6: Final answer
    x = 23.05

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.