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Finding the Fourth Proportional to 184.94, 277.88 and 139.71

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Solution

The fourth proportional to 184.94, 277.88 and 139.71 is: 209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.94 : 277.88 = 139.71 : x
  2. Step 2: Convert to fraction form
    184.94/277.88 = 139.71/x
  3. Step 3: Cross multiply
    184.94x = 277.88 × 139.71
  4. Step 4: Simplify right side
    184.94x = 38,822.61
  5. Step 5: Solve for x
    x = 38,822.61/184.94
  6. Step 6: Final answer
    x = 209.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.