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Finding the Fourth Proportional to 505.69, 758.55 and 300.34

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Solution

The fourth proportional to 505.69, 758.55 and 300.34 is: 450.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.69 : 758.55 = 300.34 : x
  2. Step 2: Convert to fraction form
    505.69/758.55 = 300.34/x
  3. Step 3: Cross multiply
    505.69x = 758.55 × 300.34
  4. Step 4: Simplify right side
    505.69x = 227,822.91
  5. Step 5: Solve for x
    x = 227,822.91/505.69
  6. Step 6: Final answer
    x = 450.52

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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.