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Finding the Fourth Proportional to 617.99, 926.93 and 247.78

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Solution

The fourth proportional to 617.99, 926.93 and 247.78 is: 371.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.99 : 926.93 = 247.78 : x
  2. Step 2: Convert to fraction form
    617.99/926.93 = 247.78/x
  3. Step 3: Cross multiply
    617.99x = 926.93 × 247.78
  4. Step 4: Simplify right side
    617.99x = 229,674.72
  5. Step 5: Solve for x
    x = 229,674.72/617.99
  6. Step 6: Final answer
    x = 371.65

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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.