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Finding the Fourth Proportional to 501.94, 752.91 and 136.78

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Solution

The fourth proportional to 501.94, 752.91 and 136.78 is: 205.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.94 : 752.91 = 136.78 : x
  2. Step 2: Convert to fraction form
    501.94/752.91 = 136.78/x
  3. Step 3: Cross multiply
    501.94x = 752.91 × 136.78
  4. Step 4: Simplify right side
    501.94x = 102,983.03
  5. Step 5: Solve for x
    x = 102,983.03/501.94
  6. Step 6: Final answer
    x = 205.17

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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.