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Finding the Fourth Proportional to 612.54, 919.53 and 247.62

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Solution

The fourth proportional to 612.54, 919.53 and 247.62 is: 371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.54 : 919.53 = 247.62 : x
  2. Step 2: Convert to fraction form
    612.54/919.53 = 247.62/x
  3. Step 3: Cross multiply
    612.54x = 919.53 × 247.62
  4. Step 4: Simplify right side
    612.54x = 227,694.02
  5. Step 5: Solve for x
    x = 227,694.02/612.54
  6. Step 6: Final answer
    x = 371.72

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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.