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Finding the Fourth Proportional to 618.03, 852.99 and 477.83

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Solution

The fourth proportional to 618.03, 852.99 and 477.83 is: 659.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.03 : 852.99 = 477.83 : x
  2. Step 2: Convert to fraction form
    618.03/852.99 = 477.83/x
  3. Step 3: Cross multiply
    618.03x = 852.99 × 477.83
  4. Step 4: Simplify right side
    618.03x = 407,584.21
  5. Step 5: Solve for x
    x = 407,584.21/618.03
  6. Step 6: Final answer
    x = 659.49

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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.