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Finding the Fourth Proportional to 1,259.89, 1,889.02 and 529.27

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Solution

The fourth proportional to 1,259.89, 1,889.02 and 529.27 is: 793.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.89 : 1,889.02 = 529.27 : x
  2. Step 2: Convert to fraction form
    1,259.89/1,889.02 = 529.27/x
  3. Step 3: Cross multiply
    1,259.89x = 1,889.02 × 529.27
  4. Step 4: Simplify right side
    1,259.89x = 999,797.55
  5. Step 5: Solve for x
    x = 999,797.55/1,259.89
  6. Step 6: Final answer
    x = 793.56

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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.