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Finding the Fourth Proportional to 618.48, 852.75 and 539.82

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Solution

The fourth proportional to 618.48, 852.75 and 539.82 is: 744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.48 : 852.75 = 539.82 : x
  2. Step 2: Convert to fraction form
    618.48/852.75 = 539.82/x
  3. Step 3: Cross multiply
    618.48x = 852.75 × 539.82
  4. Step 4: Simplify right side
    618.48x = 460,331.51
  5. Step 5: Solve for x
    x = 460,331.51/618.48
  6. Step 6: Final answer
    x = 744.29

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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.