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Finding the Fourth Proportional to 1,259.01, 1,889.43 and 712.26

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Solution

The fourth proportional to 1,259.01, 1,889.43 and 712.26 is: 1,068.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.01 : 1,889.43 = 712.26 : x
  2. Step 2: Convert to fraction form
    1,259.01/1,889.43 = 712.26/x
  3. Step 3: Cross multiply
    1,259.01x = 1,889.43 × 712.26
  4. Step 4: Simplify right side
    1,259.01x = 1,345,762.74
  5. Step 5: Solve for x
    x = 1,345,762.74/1,259.01
  6. Step 6: Final answer
    x = 1,068.91

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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.