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Finding the Fourth Proportional to 144.51, 199.29 and 100.26

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Solution

The fourth proportional to 144.51, 199.29 and 100.26 is: 138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.51 : 199.29 = 100.26 : x
  2. Step 2: Convert to fraction form
    144.51/199.29 = 100.26/x
  3. Step 3: Cross multiply
    144.51x = 199.29 × 100.26
  4. Step 4: Simplify right side
    144.51x = 19,980.82
  5. Step 5: Solve for x
    x = 19,980.82/144.51
  6. Step 6: Final answer
    x = 138.27

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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.