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Finding the Fourth Proportional to 505.25, 757.89 and 245.46

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Solution

The fourth proportional to 505.25, 757.89 and 245.46 is: 368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.25 : 757.89 = 245.46 : x
  2. Step 2: Convert to fraction form
    505.25/757.89 = 245.46/x
  3. Step 3: Cross multiply
    505.25x = 757.89 × 245.46
  4. Step 4: Simplify right side
    505.25x = 186,031.68
  5. Step 5: Solve for x
    x = 186,031.68/505.25
  6. Step 6: Final answer
    x = 368.20

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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.