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Finding the Fourth Proportional to 15.07, 22.60 and 4.92

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Solution

The fourth proportional to 15.07, 22.60 and 4.92 is: 7.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.07 : 22.60 = 4.92 : x
  2. Step 2: Convert to fraction form
    15.07/22.60 = 4.92/x
  3. Step 3: Cross multiply
    15.07x = 22.60 × 4.92
  4. Step 4: Simplify right side
    15.07x = 111.29
  5. Step 5: Solve for x
    x = 111.29/15.07
  6. Step 6: Final answer
    x = 7.38

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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.