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Finding the Fourth Proportional to 558.28, 770.47 and 322.27

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Solution

The fourth proportional to 558.28, 770.47 and 322.27 is: 444.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.28 : 770.47 = 322.27 : x
  2. Step 2: Convert to fraction form
    558.28/770.47 = 322.27/x
  3. Step 3: Cross multiply
    558.28x = 770.47 × 322.27
  4. Step 4: Simplify right side
    558.28x = 248,297.76
  5. Step 5: Solve for x
    x = 248,297.76/558.28
  6. Step 6: Final answer
    x = 444.75

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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.