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Finding the Fourth Proportional to 4.36, 6.51 and 4.31

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Solution

The fourth proportional to 4.36, 6.51 and 4.31 is: 6.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.36 : 6.51 = 4.31 : x
  2. Step 2: Convert to fraction form
    4.36/6.51 = 4.31/x
  3. Step 3: Cross multiply
    4.36x = 6.51 × 4.31
  4. Step 4: Simplify right side
    4.36x = 28.06
  5. Step 5: Solve for x
    x = 28.06/4.36
  6. Step 6: Final answer
    x = 6.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.