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Finding the Fourth Proportional to 151.66, 228.47 and 149.77

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Solution

The fourth proportional to 151.66, 228.47 and 149.77 is: 225.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.66 : 228.47 = 149.77 : x
  2. Step 2: Convert to fraction form
    151.66/228.47 = 149.77/x
  3. Step 3: Cross multiply
    151.66x = 228.47 × 149.77
  4. Step 4: Simplify right side
    151.66x = 34,217.95
  5. Step 5: Solve for x
    x = 34,217.95/151.66
  6. Step 6: Final answer
    x = 225.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.