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Finding the Fourth Proportional to 151.77, 228.81 and 127.89

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Solution

The fourth proportional to 151.77, 228.81 and 127.89 is: 192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.77 : 228.81 = 127.89 : x
  2. Step 2: Convert to fraction form
    151.77/228.81 = 127.89/x
  3. Step 3: Cross multiply
    151.77x = 228.81 × 127.89
  4. Step 4: Simplify right side
    151.77x = 29,262.51
  5. Step 5: Solve for x
    x = 29,262.51/151.77
  6. Step 6: Final answer
    x = 192.81

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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.