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Finding the Fourth Proportional to 518.04, 777.04 and 133.28

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Solution

The fourth proportional to 518.04, 777.04 and 133.28 is: 199.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.04 : 777.04 = 133.28 : x
  2. Step 2: Convert to fraction form
    518.04/777.04 = 133.28/x
  3. Step 3: Cross multiply
    518.04x = 777.04 × 133.28
  4. Step 4: Simplify right side
    518.04x = 103,563.89
  5. Step 5: Solve for x
    x = 103,563.89/518.04
  6. Step 6: Final answer
    x = 199.91

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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.