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Finding the Fourth Proportional to 618.30, 926.55 and 563.63

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Solution

The fourth proportional to 618.30, 926.55 and 563.63 is: 844.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.30 : 926.55 = 563.63 : x
  2. Step 2: Convert to fraction form
    618.30/926.55 = 563.63/x
  3. Step 3: Cross multiply
    618.30x = 926.55 × 563.63
  4. Step 4: Simplify right side
    618.30x = 522,226.74
  5. Step 5: Solve for x
    x = 522,226.74/618.30
  6. Step 6: Final answer
    x = 844.62

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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.