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Finding the Fourth Proportional to 481.95, 722.43 and 157.05

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Solution

The fourth proportional to 481.95, 722.43 and 157.05 is: 235.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.95 : 722.43 = 157.05 : x
  2. Step 2: Convert to fraction form
    481.95/722.43 = 157.05/x
  3. Step 3: Cross multiply
    481.95x = 722.43 × 157.05
  4. Step 4: Simplify right side
    481.95x = 113,457.63
  5. Step 5: Solve for x
    x = 113,457.63/481.95
  6. Step 6: Final answer
    x = 235.41

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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.