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Finding the Fourth Proportional to 1,295.15, 1,942.21 and 564.21

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Solution

The fourth proportional to 1,295.15, 1,942.21 and 564.21 is: 846.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.15 : 1,942.21 = 564.21 : x
  2. Step 2: Convert to fraction form
    1,295.15/1,942.21 = 564.21/x
  3. Step 3: Cross multiply
    1,295.15x = 1,942.21 × 564.21
  4. Step 4: Simplify right side
    1,295.15x = 1,095,816.54
  5. Step 5: Solve for x
    x = 1,095,816.54/1,295.15
  6. Step 6: Final answer
    x = 846.09

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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.