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Finding the Fourth Proportional to 1,482.22, 2,223.32 and 386.49

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Solution

The fourth proportional to 1,482.22, 2,223.32 and 386.49 is: 579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.22 : 2,223.32 = 386.49 : x
  2. Step 2: Convert to fraction form
    1,482.22/2,223.32 = 386.49/x
  3. Step 3: Cross multiply
    1,482.22x = 2,223.32 × 386.49
  4. Step 4: Simplify right side
    1,482.22x = 859,277.90
  5. Step 5: Solve for x
    x = 859,277.90/1,482.22
  6. Step 6: Final answer
    x = 579.72

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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.