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Finding the Fourth Proportional to 338.04, 505.79 and 240.76

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Solution

The fourth proportional to 338.04, 505.79 and 240.76 is: 360.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.04 : 505.79 = 240.76 : x
  2. Step 2: Convert to fraction form
    338.04/505.79 = 240.76/x
  3. Step 3: Cross multiply
    338.04x = 505.79 × 240.76
  4. Step 4: Simplify right side
    338.04x = 121,773.40
  5. Step 5: Solve for x
    x = 121,773.40/338.04
  6. Step 6: Final answer
    x = 360.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.