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Finding the Fourth Proportional to 523.91, 722.99 and 291.04

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Solution

The fourth proportional to 523.91, 722.99 and 291.04 is: 401.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.91 : 722.99 = 291.04 : x
  2. Step 2: Convert to fraction form
    523.91/722.99 = 291.04/x
  3. Step 3: Cross multiply
    523.91x = 722.99 × 291.04
  4. Step 4: Simplify right side
    523.91x = 210,419.01
  5. Step 5: Solve for x
    x = 210,419.01/523.91
  6. Step 6: Final answer
    x = 401.63

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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.