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Finding the Fourth Proportional to 789.81, 1,184.71 and 204.76

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Solution

The fourth proportional to 789.81, 1,184.71 and 204.76 is: 307.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.81 : 1,184.71 = 204.76 : x
  2. Step 2: Convert to fraction form
    789.81/1,184.71 = 204.76/x
  3. Step 3: Cross multiply
    789.81x = 1,184.71 × 204.76
  4. Step 4: Simplify right side
    789.81x = 242,579.97
  5. Step 5: Solve for x
    x = 242,579.97/789.81
  6. Step 6: Final answer
    x = 307.14

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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.