Home / 1,308.18-1,962.27-659.46

Finding the Fourth Proportional to 1,308.18, 1,962.27 and 659.46

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Solution

The fourth proportional to 1,308.18, 1,962.27 and 659.46 is: 989.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.18 : 1,962.27 = 659.46 : x
  2. Step 2: Convert to fraction form
    1,308.18/1,962.27 = 659.46/x
  3. Step 3: Cross multiply
    1,308.18x = 1,962.27 × 659.46
  4. Step 4: Simplify right side
    1,308.18x = 1,294,038.57
  5. Step 5: Solve for x
    x = 1,294,038.57/1,308.18
  6. Step 6: Final answer
    x = 989.19

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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.