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Finding the Fourth Proportional to 10.36, 15.59 and 9.43

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Solution

The fourth proportional to 10.36, 15.59 and 9.43 is: 14.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.36 : 15.59 = 9.43 : x
  2. Step 2: Convert to fraction form
    10.36/15.59 = 9.43/x
  3. Step 3: Cross multiply
    10.36x = 15.59 × 9.43
  4. Step 4: Simplify right side
    10.36x = 146.89
  5. Step 5: Solve for x
    x = 146.89/10.36
  6. Step 6: Final answer
    x = 14.18

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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.