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Finding the Fourth Proportional to 524.09, 723.20 and 291.21

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Solution

The fourth proportional to 524.09, 723.20 and 291.21 is: 401.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.09 : 723.20 = 291.21 : x
  2. Step 2: Convert to fraction form
    524.09/723.20 = 291.21/x
  3. Step 3: Cross multiply
    524.09x = 723.20 × 291.21
  4. Step 4: Simplify right side
    524.09x = 210,601.62
  5. Step 5: Solve for x
    x = 210,601.62/524.09
  6. Step 6: Final answer
    x = 401.85

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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.