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Finding the Fourth Proportional to 302.66, 417.58 and 178.19

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Solution

The fourth proportional to 302.66, 417.58 and 178.19 is: 245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.66 : 417.58 = 178.19 : x
  2. Step 2: Convert to fraction form
    302.66/417.58 = 178.19/x
  3. Step 3: Cross multiply
    302.66x = 417.58 × 178.19
  4. Step 4: Simplify right side
    302.66x = 74,408.58
  5. Step 5: Solve for x
    x = 74,408.58/302.66
  6. Step 6: Final answer
    x = 245.85

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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.