Home / 1,031.45-1,423.44-612.05

Finding the Fourth Proportional to 1,031.45, 1,423.44 and 612.05

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Solution

The fourth proportional to 1,031.45, 1,423.44 and 612.05 is: 844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.45 : 1,423.44 = 612.05 : x
  2. Step 2: Convert to fraction form
    1,031.45/1,423.44 = 612.05/x
  3. Step 3: Cross multiply
    1,031.45x = 1,423.44 × 612.05
  4. Step 4: Simplify right side
    1,031.45x = 871,209.33
  5. Step 5: Solve for x
    x = 871,209.33/1,031.45
  6. Step 6: Final answer
    x = 844.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.