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Finding the Fourth Proportional to 153.47, 211.73 and 94.43

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Solution

The fourth proportional to 153.47, 211.73 and 94.43 is: 130.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.47 : 211.73 = 94.43 : x
  2. Step 2: Convert to fraction form
    153.47/211.73 = 94.43/x
  3. Step 3: Cross multiply
    153.47x = 211.73 × 94.43
  4. Step 4: Simplify right side
    153.47x = 19,993.66
  5. Step 5: Solve for x
    x = 19,993.66/153.47
  6. Step 6: Final answer
    x = 130.28

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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.