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Finding the Fourth Proportional to 558.38, 770.61 and 322.33

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Solution

The fourth proportional to 558.38, 770.61 and 322.33 is: 444.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.38 : 770.61 = 322.33 : x
  2. Step 2: Convert to fraction form
    558.38/770.61 = 322.33/x
  3. Step 3: Cross multiply
    558.38x = 770.61 × 322.33
  4. Step 4: Simplify right side
    558.38x = 248,390.72
  5. Step 5: Solve for x
    x = 248,390.72/558.38
  6. Step 6: Final answer
    x = 444.84

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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.