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Finding the Fourth Proportional to 618.93, 853.62 and 525.93

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Solution

The fourth proportional to 618.93, 853.62 and 525.93 is: 725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.93 : 853.62 = 525.93 : x
  2. Step 2: Convert to fraction form
    618.93/853.62 = 525.93/x
  3. Step 3: Cross multiply
    618.93x = 853.62 × 525.93
  4. Step 4: Simplify right side
    618.93x = 448,944.37
  5. Step 5: Solve for x
    x = 448,944.37/618.93
  6. Step 6: Final answer
    x = 725.36

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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.