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Finding the Fourth Proportional to 618.30, 852.57 and 453.06

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Solution

The fourth proportional to 618.30, 852.57 and 453.06 is: 624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.30 : 852.57 = 453.06 : x
  2. Step 2: Convert to fraction form
    618.30/852.57 = 453.06/x
  3. Step 3: Cross multiply
    618.30x = 852.57 × 453.06
  4. Step 4: Simplify right side
    618.30x = 386,265.36
  5. Step 5: Solve for x
    x = 386,265.36/618.30
  6. Step 6: Final answer
    x = 624.72

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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.