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Finding the Fourth Proportional to 153.99, 211.11 and 151.26

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Solution

The fourth proportional to 153.99, 211.11 and 151.26 is: 207.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.99 : 211.11 = 151.26 : x
  2. Step 2: Convert to fraction form
    153.99/211.11 = 151.26/x
  3. Step 3: Cross multiply
    153.99x = 211.11 × 151.26
  4. Step 4: Simplify right side
    153.99x = 31,932.50
  5. Step 5: Solve for x
    x = 31,932.50/153.99
  6. Step 6: Final answer
    x = 207.37

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.