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Finding the Fourth Proportional to 303.84, 418.95 and 247.74

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Solution

The fourth proportional to 303.84, 418.95 and 247.74 is: 341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.84 : 418.95 = 247.74 : x
  2. Step 2: Convert to fraction form
    303.84/418.95 = 247.74/x
  3. Step 3: Cross multiply
    303.84x = 418.95 × 247.74
  4. Step 4: Simplify right side
    303.84x = 103,790.67
  5. Step 5: Solve for x
    x = 103,790.67/303.84
  6. Step 6: Final answer
    x = 341.60

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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.