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Finding the Fourth Proportional to 508.44, 761.90 and 303.11

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Solution

The fourth proportional to 508.44, 761.90 and 303.11 is: 454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.44 : 761.90 = 303.11 : x
  2. Step 2: Convert to fraction form
    508.44/761.90 = 303.11/x
  3. Step 3: Cross multiply
    508.44x = 761.90 × 303.11
  4. Step 4: Simplify right side
    508.44x = 230,934.18
  5. Step 5: Solve for x
    x = 230,934.18/508.44
  6. Step 6: Final answer
    x = 454.20

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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.