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Finding the Fourth Proportional to 1,259.35, 1,889.26 and 437.67

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Solution

The fourth proportional to 1,259.35, 1,889.26 and 437.67 is: 656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.35 : 1,889.26 = 437.67 : x
  2. Step 2: Convert to fraction form
    1,259.35/1,889.26 = 437.67/x
  3. Step 3: Cross multiply
    1,259.35x = 1,889.26 × 437.67
  4. Step 4: Simplify right side
    1,259.35x = 826,871.33
  5. Step 5: Solve for x
    x = 826,871.33/1,259.35
  6. Step 6: Final answer
    x = 656.59

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1.5x scale

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.