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Finding the Fourth Proportional to 1,389.37, 2,084.05 and 567.46

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Solution

The fourth proportional to 1,389.37, 2,084.05 and 567.46 is: 851.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.37 : 2,084.05 = 567.46 : x
  2. Step 2: Convert to fraction form
    1,389.37/2,084.05 = 567.46/x
  3. Step 3: Cross multiply
    1,389.37x = 2,084.05 × 567.46
  4. Step 4: Simplify right side
    1,389.37x = 1,182,604.59
  5. Step 5: Solve for x
    x = 1,182,604.59/1,389.37
  6. Step 6: Final answer
    x = 851.18

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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.