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Finding the Fourth Proportional to 758.04, 1,136.80 and 270.96

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Solution

The fourth proportional to 758.04, 1,136.80 and 270.96 is: 406.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.04 : 1,136.80 = 270.96 : x
  2. Step 2: Convert to fraction form
    758.04/1,136.80 = 270.96/x
  3. Step 3: Cross multiply
    758.04x = 1,136.80 × 270.96
  4. Step 4: Simplify right side
    758.04x = 308,027.33
  5. Step 5: Solve for x
    x = 308,027.33/758.04
  6. Step 6: Final answer
    x = 406.35

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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.