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Finding the Fourth Proportional to 618.86, 847.50 and 610.76

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Solution

The fourth proportional to 618.86, 847.50 and 610.76 is: 836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.86 : 847.50 = 610.76 : x
  2. Step 2: Convert to fraction form
    618.86/847.50 = 610.76/x
  3. Step 3: Cross multiply
    618.86x = 847.50 × 610.76
  4. Step 4: Simplify right side
    618.86x = 517,619.10
  5. Step 5: Solve for x
    x = 517,619.10/618.86
  6. Step 6: Final answer
    x = 836.41

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.