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Finding the Fourth Proportional to 27.07, 37.34 and 15.57

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Solution

The fourth proportional to 27.07, 37.34 and 15.57 is: 21.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.07 : 37.34 = 15.57 : x
  2. Step 2: Convert to fraction form
    27.07/37.34 = 15.57/x
  3. Step 3: Cross multiply
    27.07x = 37.34 × 15.57
  4. Step 4: Simplify right side
    27.07x = 581.38
  5. Step 5: Solve for x
    x = 581.38/27.07
  6. Step 6: Final answer
    x = 21.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.