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Finding the Fourth Proportional to 289.77, 399.62 and 184.68

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Solution

The fourth proportional to 289.77, 399.62 and 184.68 is: 254.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.77 : 399.62 = 184.68 : x
  2. Step 2: Convert to fraction form
    289.77/399.62 = 184.68/x
  3. Step 3: Cross multiply
    289.77x = 399.62 × 184.68
  4. Step 4: Simplify right side
    289.77x = 73,800.90
  5. Step 5: Solve for x
    x = 73,800.90/289.77
  6. Step 6: Final answer
    x = 254.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.