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Finding the Fourth Proportional to 612.97, 919.65 and 247.96

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Solution

The fourth proportional to 612.97, 919.65 and 247.96 is: 372.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.97 : 919.65 = 247.96 : x
  2. Step 2: Convert to fraction form
    612.97/919.65 = 247.96/x
  3. Step 3: Cross multiply
    612.97x = 919.65 × 247.96
  4. Step 4: Simplify right side
    612.97x = 228,038.49
  5. Step 5: Solve for x
    x = 228,038.49/612.97
  6. Step 6: Final answer
    x = 372.02

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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.