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Finding the Fourth Proportional to 222.57, 307.03 and 151.61

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Solution

The fourth proportional to 222.57, 307.03 and 151.61 is: 209.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.57 : 307.03 = 151.61 : x
  2. Step 2: Convert to fraction form
    222.57/307.03 = 151.61/x
  3. Step 3: Cross multiply
    222.57x = 307.03 × 151.61
  4. Step 4: Simplify right side
    222.57x = 46,548.82
  5. Step 5: Solve for x
    x = 46,548.82/222.57
  6. Step 6: Final answer
    x = 209.14

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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.