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Finding the Fourth Proportional to 618.03, 922.57 and 572.30

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Solution

The fourth proportional to 618.03, 922.57 and 572.30 is: 854.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.03 : 922.57 = 572.30 : x
  2. Step 2: Convert to fraction form
    618.03/922.57 = 572.30/x
  3. Step 3: Cross multiply
    618.03x = 922.57 × 572.30
  4. Step 4: Simplify right side
    618.03x = 527,986.81
  5. Step 5: Solve for x
    x = 527,986.81/618.03
  6. Step 6: Final answer
    x = 854.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.