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Finding the Fourth Proportional to 241.21, 332.90 and 153.87

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Solution

The fourth proportional to 241.21, 332.90 and 153.87 is: 212.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.21 : 332.90 = 153.87 : x
  2. Step 2: Convert to fraction form
    241.21/332.90 = 153.87/x
  3. Step 3: Cross multiply
    241.21x = 332.90 × 153.87
  4. Step 4: Simplify right side
    241.21x = 51,223.32
  5. Step 5: Solve for x
    x = 51,223.32/241.21
  6. Step 6: Final answer
    x = 212.36

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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.