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Finding the Fourth Proportional to 225.51, 338.35 and 156.99

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Solution

The fourth proportional to 225.51, 338.35 and 156.99 is: 235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.51 : 338.35 = 156.99 : x
  2. Step 2: Convert to fraction form
    225.51/338.35 = 156.99/x
  3. Step 3: Cross multiply
    225.51x = 338.35 × 156.99
  4. Step 4: Simplify right side
    225.51x = 53,117.57
  5. Step 5: Solve for x
    x = 53,117.57/225.51
  6. Step 6: Final answer
    x = 235.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.