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Finding the Fourth Proportional to 508.40, 762.94 and 200.25

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Solution

The fourth proportional to 508.40, 762.94 and 200.25 is: 300.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.40 : 762.94 = 200.25 : x
  2. Step 2: Convert to fraction form
    508.40/762.94 = 200.25/x
  3. Step 3: Cross multiply
    508.40x = 762.94 × 200.25
  4. Step 4: Simplify right side
    508.40x = 152,777.40
  5. Step 5: Solve for x
    x = 152,777.40/508.40
  6. Step 6: Final answer
    x = 300.51

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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.