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Finding the Fourth Proportional to 235.99, 325.56 and 153.10

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Solution

The fourth proportional to 235.99, 325.56 and 153.10 is: 211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.99 : 325.56 = 153.10 : x
  2. Step 2: Convert to fraction form
    235.99/325.56 = 153.10/x
  3. Step 3: Cross multiply
    235.99x = 325.56 × 153.10
  4. Step 4: Simplify right side
    235.99x = 49,843.24
  5. Step 5: Solve for x
    x = 49,843.24/235.99
  6. Step 6: Final answer
    x = 211.21

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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.