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Finding the Fourth Proportional to 289.02, 398.64 and 184.11

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Solution

The fourth proportional to 289.02, 398.64 and 184.11 is: 253.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.02 : 398.64 = 184.11 : x
  2. Step 2: Convert to fraction form
    289.02/398.64 = 184.11/x
  3. Step 3: Cross multiply
    289.02x = 398.64 × 184.11
  4. Step 4: Simplify right side
    289.02x = 73,393.61
  5. Step 5: Solve for x
    x = 73,393.61/289.02
  6. Step 6: Final answer
    x = 253.94

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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.