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Finding the Fourth Proportional to 618.96, 929.88 and 362.64

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Solution

The fourth proportional to 618.96, 929.88 and 362.64 is: 544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.96 : 929.88 = 362.64 : x
  2. Step 2: Convert to fraction form
    618.96/929.88 = 362.64/x
  3. Step 3: Cross multiply
    618.96x = 929.88 × 362.64
  4. Step 4: Simplify right side
    618.96x = 337,211.68
  5. Step 5: Solve for x
    x = 337,211.68/618.96
  6. Step 6: Final answer
    x = 544.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.