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Finding the Fourth Proportional to 618.02, 925.70 and 575.30

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Solution

The fourth proportional to 618.02, 925.70 and 575.30 is: 861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.02 : 925.70 = 575.30 : x
  2. Step 2: Convert to fraction form
    618.02/925.70 = 575.30/x
  3. Step 3: Cross multiply
    618.02x = 925.70 × 575.30
  4. Step 4: Simplify right side
    618.02x = 532,555.21
  5. Step 5: Solve for x
    x = 532,555.21/618.02
  6. Step 6: Final answer
    x = 861.71

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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.