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Finding the Fourth Proportional to 302.46, 417.45 and 190.49

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Solution

The fourth proportional to 302.46, 417.45 and 190.49 is: 262.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.46 : 417.45 = 190.49 : x
  2. Step 2: Convert to fraction form
    302.46/417.45 = 190.49/x
  3. Step 3: Cross multiply
    302.46x = 417.45 × 190.49
  4. Step 4: Simplify right side
    302.46x = 79,517.96
  5. Step 5: Solve for x
    x = 79,517.96/302.46
  6. Step 6: Final answer
    x = 262.90

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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.