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Finding the Fourth Proportional to 351.96, 483.06 and 322.80

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Solution

The fourth proportional to 351.96, 483.06 and 322.80 is: 443.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.96 : 483.06 = 322.80 : x
  2. Step 2: Convert to fraction form
    351.96/483.06 = 322.80/x
  3. Step 3: Cross multiply
    351.96x = 483.06 × 322.80
  4. Step 4: Simplify right side
    351.96x = 155,931.77
  5. Step 5: Solve for x
    x = 155,931.77/351.96
  6. Step 6: Final answer
    x = 443.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.