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Finding the Fourth Proportional to 505.04, 756.87 and 490.26

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Solution

The fourth proportional to 505.04, 756.87 and 490.26 is: 734.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.04 : 756.87 = 490.26 : x
  2. Step 2: Convert to fraction form
    505.04/756.87 = 490.26/x
  3. Step 3: Cross multiply
    505.04x = 756.87 × 490.26
  4. Step 4: Simplify right side
    505.04x = 371,063.09
  5. Step 5: Solve for x
    x = 371,063.09/505.04
  6. Step 6: Final answer
    x = 734.73

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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.