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Finding the Fourth Proportional to 558.44, 835.20 and 448.28

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Solution

The fourth proportional to 558.44, 835.20 and 448.28 is: 670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.44 : 835.20 = 448.28 : x
  2. Step 2: Convert to fraction form
    558.44/835.20 = 448.28/x
  3. Step 3: Cross multiply
    558.44x = 835.20 × 448.28
  4. Step 4: Simplify right side
    558.44x = 374,403.46
  5. Step 5: Solve for x
    x = 374,403.46/558.44
  6. Step 6: Final answer
    x = 670.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.