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Finding the Fourth Proportional to 618.35, 927.72 and 207.52

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Solution

The fourth proportional to 618.35, 927.72 and 207.52 is: 311.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.35 : 927.72 = 207.52 : x
  2. Step 2: Convert to fraction form
    618.35/927.72 = 207.52/x
  3. Step 3: Cross multiply
    618.35x = 927.72 × 207.52
  4. Step 4: Simplify right side
    618.35x = 192,518.14
  5. Step 5: Solve for x
    x = 192,518.14/618.35
  6. Step 6: Final answer
    x = 311.34

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1.5x scale

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.