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Finding the Fourth Proportional to 504.20, 756.64 and 192.13

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Solution

The fourth proportional to 504.20, 756.64 and 192.13 is: 288.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.20 : 756.64 = 192.13 : x
  2. Step 2: Convert to fraction form
    504.20/756.64 = 192.13/x
  3. Step 3: Cross multiply
    504.20x = 756.64 × 192.13
  4. Step 4: Simplify right side
    504.20x = 145,371.59
  5. Step 5: Solve for x
    x = 145,371.59/504.20
  6. Step 6: Final answer
    x = 288.32

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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.