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Finding the Fourth Proportional to 558.59, 770.79 and 322.54

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Solution

The fourth proportional to 558.59, 770.79 and 322.54 is: 445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.59 : 770.79 = 322.54 : x
  2. Step 2: Convert to fraction form
    558.59/770.79 = 322.54/x
  3. Step 3: Cross multiply
    558.59x = 770.79 × 322.54
  4. Step 4: Simplify right side
    558.59x = 248,611.33
  5. Step 5: Solve for x
    x = 248,611.33/558.59
  6. Step 6: Final answer
    x = 445.07

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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.