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Finding the Fourth Proportional to 302.94, 418.02 and 178.58

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Solution

The fourth proportional to 302.94, 418.02 and 178.58 is: 246.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.94 : 418.02 = 178.58 : x
  2. Step 2: Convert to fraction form
    302.94/418.02 = 178.58/x
  3. Step 3: Cross multiply
    302.94x = 418.02 × 178.58
  4. Step 4: Simplify right side
    302.94x = 74,650.01
  5. Step 5: Solve for x
    x = 74,650.01/302.94
  6. Step 6: Final answer
    x = 246.42

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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.