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Finding the Fourth Proportional to 481, 720.98 and 264.12

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Solution

The fourth proportional to 481, 720.98 and 264.12 is: 395.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    481 : 720.98 = 264.12 : x
  2. Step 2: Convert to fraction form
    481/720.98 = 264.12/x
  3. Step 3: Cross multiply
    481x = 720.98 × 264.12
  4. Step 4: Simplify right side
    481x = 190,425.24
  5. Step 5: Solve for x
    x = 190,425.24/481
  6. Step 6: Final answer
    x = 395.89

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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.