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Finding the Fourth Proportional to 523.05, 721.81 and 302.00

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Solution

The fourth proportional to 523.05, 721.81 and 302.00 is: 416.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.05 : 721.81 = 302.00 : x
  2. Step 2: Convert to fraction form
    523.05/721.81 = 302.00/x
  3. Step 3: Cross multiply
    523.05x = 721.81 × 302.00
  4. Step 4: Simplify right side
    523.05x = 217,984.44
  5. Step 5: Solve for x
    x = 217,984.44/523.05
  6. Step 6: Final answer
    x = 416.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.