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Finding the Fourth Proportional to 549.50, 757.80 and 350.30

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Solution

The fourth proportional to 549.50, 757.80 and 350.30 is: 483.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.50 : 757.80 = 350.30 : x
  2. Step 2: Convert to fraction form
    549.50/757.80 = 350.30/x
  3. Step 3: Cross multiply
    549.50x = 757.80 × 350.30
  4. Step 4: Simplify right side
    549.50x = 265,457.34
  5. Step 5: Solve for x
    x = 265,457.34/549.50
  6. Step 6: Final answer
    x = 483.09

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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.