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Finding the Fourth Proportional to 558.38, 770.76 and 325.50

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Solution

The fourth proportional to 558.38, 770.76 and 325.50 is: 449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.38 : 770.76 = 325.50 : x
  2. Step 2: Convert to fraction form
    558.38/770.76 = 325.50/x
  3. Step 3: Cross multiply
    558.38x = 770.76 × 325.50
  4. Step 4: Simplify right side
    558.38x = 250,882.38
  5. Step 5: Solve for x
    x = 250,882.38/558.38
  6. Step 6: Final answer
    x = 449.30

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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.