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Finding the Fourth Proportional to 618.70, 926.67 and 570.68

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Solution

The fourth proportional to 618.70, 926.67 and 570.68 is: 854.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.70 : 926.67 = 570.68 : x
  2. Step 2: Convert to fraction form
    618.70/926.67 = 570.68/x
  3. Step 3: Cross multiply
    618.70x = 926.67 × 570.68
  4. Step 4: Simplify right side
    618.70x = 528,832.04
  5. Step 5: Solve for x
    x = 528,832.04/618.70
  6. Step 6: Final answer
    x = 854.75

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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.