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Finding the Fourth Proportional to 611, 920.66 and 544.70

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Solution

The fourth proportional to 611, 920.66 and 544.70 is: 820.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    611 : 920.66 = 544.70 : x
  2. Step 2: Convert to fraction form
    611/920.66 = 544.70/x
  3. Step 3: Cross multiply
    611x = 920.66 × 544.70
  4. Step 4: Simplify right side
    611x = 501,483.50
  5. Step 5: Solve for x
    x = 501,483.50/611
  6. Step 6: Final answer
    x = 820.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.