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Finding the Fourth Proportional to 1,865.76, 2,798.79 and 567.22

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Solution

The fourth proportional to 1,865.76, 2,798.79 and 567.22 is: 850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.76 : 2,798.79 = 567.22 : x
  2. Step 2: Convert to fraction form
    1,865.76/2,798.79 = 567.22/x
  3. Step 3: Cross multiply
    1,865.76x = 2,798.79 × 567.22
  4. Step 4: Simplify right side
    1,865.76x = 1,587,529.66
  5. Step 5: Solve for x
    x = 1,587,529.66/1,865.76
  6. Step 6: Final answer
    x = 850.88

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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.