Home / 1,031.16-1,546.35-640.59

Finding the Fourth Proportional to 1,031.16, 1,546.35 and 640.59

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Solution

The fourth proportional to 1,031.16, 1,546.35 and 640.59 is: 960.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.16 : 1,546.35 = 640.59 : x
  2. Step 2: Convert to fraction form
    1,031.16/1,546.35 = 640.59/x
  3. Step 3: Cross multiply
    1,031.16x = 1,546.35 × 640.59
  4. Step 4: Simplify right side
    1,031.16x = 990,576.35
  5. Step 5: Solve for x
    x = 990,576.35/1,031.16
  6. Step 6: Final answer
    x = 960.64

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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.