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Finding the Fourth Proportional to 618.92, 852.99 and 539.34

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Solution

The fourth proportional to 618.92, 852.99 and 539.34 is: 743.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.92 : 852.99 = 539.34 : x
  2. Step 2: Convert to fraction form
    618.92/852.99 = 539.34/x
  3. Step 3: Cross multiply
    618.92x = 852.99 × 539.34
  4. Step 4: Simplify right side
    618.92x = 460,051.63
  5. Step 5: Solve for x
    x = 460,051.63/618.92
  6. Step 6: Final answer
    x = 743.32

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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.