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Finding the Fourth Proportional to 508.17, 761.72 and 361.45

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Solution

The fourth proportional to 508.17, 761.72 and 361.45 is: 541.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.17 : 761.72 = 361.45 : x
  2. Step 2: Convert to fraction form
    508.17/761.72 = 361.45/x
  3. Step 3: Cross multiply
    508.17x = 761.72 × 361.45
  4. Step 4: Simplify right side
    508.17x = 275,319.98
  5. Step 5: Solve for x
    x = 275,319.98/508.17
  6. Step 6: Final answer
    x = 541.79

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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.