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Finding the Fourth Proportional to 1,259.03, 1,889.42 and 610.22

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Solution

The fourth proportional to 1,259.03, 1,889.42 and 610.22 is: 915.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.03 : 1,889.42 = 610.22 : x
  2. Step 2: Convert to fraction form
    1,259.03/1,889.42 = 610.22/x
  3. Step 3: Cross multiply
    1,259.03x = 1,889.42 × 610.22
  4. Step 4: Simplify right side
    1,259.03x = 1,152,949.37
  5. Step 5: Solve for x
    x = 1,152,949.37/1,259.03
  6. Step 6: Final answer
    x = 915.75

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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.