Home / 1,078.40-1,488.20-606.33

Finding the Fourth Proportional to 1,078.40, 1,488.20 and 606.33

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Solution

The fourth proportional to 1,078.40, 1,488.20 and 606.33 is: 836.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078.40 : 1,488.20 = 606.33 : x
  2. Step 2: Convert to fraction form
    1,078.40/1,488.20 = 606.33/x
  3. Step 3: Cross multiply
    1,078.40x = 1,488.20 × 606.33
  4. Step 4: Simplify right side
    1,078.40x = 902,337.27
  5. Step 5: Solve for x
    x = 902,337.27/1,078.40
  6. Step 6: Final answer
    x = 836.74

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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.