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Finding the Fourth Proportional to 152.22, 209.73 and 115.50

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Solution

The fourth proportional to 152.22, 209.73 and 115.50 is: 159.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.22 : 209.73 = 115.50 : x
  2. Step 2: Convert to fraction form
    152.22/209.73 = 115.50/x
  3. Step 3: Cross multiply
    152.22x = 209.73 × 115.50
  4. Step 4: Simplify right side
    152.22x = 24,223.82
  5. Step 5: Solve for x
    x = 24,223.82/152.22
  6. Step 6: Final answer
    x = 159.14

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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.