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Finding the Fourth Proportional to 618.53, 853.58 and 352.94

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Solution

The fourth proportional to 618.53, 853.58 and 352.94 is: 487.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.53 : 853.58 = 352.94 : x
  2. Step 2: Convert to fraction form
    618.53/853.58 = 352.94/x
  3. Step 3: Cross multiply
    618.53x = 853.58 × 352.94
  4. Step 4: Simplify right side
    618.53x = 301,262.53
  5. Step 5: Solve for x
    x = 301,262.53/618.53
  6. Step 6: Final answer
    x = 487.06

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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.