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Finding the Fourth Proportional to 610.88, 911.01 and 547.72

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Solution

The fourth proportional to 610.88, 911.01 and 547.72 is: 816.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.88 : 911.01 = 547.72 : x
  2. Step 2: Convert to fraction form
    610.88/911.01 = 547.72/x
  3. Step 3: Cross multiply
    610.88x = 911.01 × 547.72
  4. Step 4: Simplify right side
    610.88x = 498,978.40
  5. Step 5: Solve for x
    x = 498,978.40/610.88
  6. Step 6: Final answer
    x = 816.82

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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.