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Finding the Fourth Proportional to 239.77, 356.93 and 228.59

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Solution

The fourth proportional to 239.77, 356.93 and 228.59 is: 340.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.77 : 356.93 = 228.59 : x
  2. Step 2: Convert to fraction form
    239.77/356.93 = 228.59/x
  3. Step 3: Cross multiply
    239.77x = 356.93 × 228.59
  4. Step 4: Simplify right side
    239.77x = 81,588.13
  5. Step 5: Solve for x
    x = 81,588.13/239.77
  6. Step 6: Final answer
    x = 340.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.