Home / 820.03-1,228.98-332.82

Finding the Fourth Proportional to 820.03, 1,228.98 and 332.82

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Solution

The fourth proportional to 820.03, 1,228.98 and 332.82 is: 498.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    820.03 : 1,228.98 = 332.82 : x
  2. Step 2: Convert to fraction form
    820.03/1,228.98 = 332.82/x
  3. Step 3: Cross multiply
    820.03x = 1,228.98 × 332.82
  4. Step 4: Simplify right side
    820.03x = 409,022.98
  5. Step 5: Solve for x
    x = 409,022.98/820.03
  6. Step 6: Final answer
    x = 498.79

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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.