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Finding the Fourth Proportional to 560.73, 839.90 and 545.37

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Solution

The fourth proportional to 560.73, 839.90 and 545.37 is: 816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.73 : 839.90 = 545.37 : x
  2. Step 2: Convert to fraction form
    560.73/839.90 = 545.37/x
  3. Step 3: Cross multiply
    560.73x = 839.90 × 545.37
  4. Step 4: Simplify right side
    560.73x = 458,053.54
  5. Step 5: Solve for x
    x = 458,053.54/560.73
  6. Step 6: Final answer
    x = 816.89

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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.