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Finding the Fourth Proportional to 558.67, 771 and 322.63

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Solution

The fourth proportional to 558.67, 771 and 322.63 is: 445.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.67 : 771 = 322.63 : x
  2. Step 2: Convert to fraction form
    558.67/771 = 322.63/x
  3. Step 3: Cross multiply
    558.67x = 771 × 322.63
  4. Step 4: Simplify right side
    558.67x = 248,747.73
  5. Step 5: Solve for x
    x = 248,747.73/558.67
  6. Step 6: Final answer
    x = 445.25

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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.