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Finding the Fourth Proportional to 504.20, 756.81 and 446.79

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Solution

The fourth proportional to 504.20, 756.81 and 446.79 is: 670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.20 : 756.81 = 446.79 : x
  2. Step 2: Convert to fraction form
    504.20/756.81 = 446.79/x
  3. Step 3: Cross multiply
    504.20x = 756.81 × 446.79
  4. Step 4: Simplify right side
    504.20x = 338,135.14
  5. Step 5: Solve for x
    x = 338,135.14/504.20
  6. Step 6: Final answer
    x = 670.64

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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.