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Finding the Fourth Proportional to 480.99, 720.99 and 264.11

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Solution

The fourth proportional to 480.99, 720.99 and 264.11 is: 395.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.99 : 720.99 = 264.11 : x
  2. Step 2: Convert to fraction form
    480.99/720.99 = 264.11/x
  3. Step 3: Cross multiply
    480.99x = 720.99 × 264.11
  4. Step 4: Simplify right side
    480.99x = 190,420.67
  5. Step 5: Solve for x
    x = 190,420.67/480.99
  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.