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Finding the Fourth Proportional to 360.80, 538.63 and 306.11

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Solution

The fourth proportional to 360.80, 538.63 and 306.11 is: 456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.80 : 538.63 = 306.11 : x
  2. Step 2: Convert to fraction form
    360.80/538.63 = 306.11/x
  3. Step 3: Cross multiply
    360.80x = 538.63 × 306.11
  4. Step 4: Simplify right side
    360.80x = 164,880.03
  5. Step 5: Solve for x
    x = 164,880.03/360.80
  6. Step 6: Final answer
    x = 456.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.