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Finding the Fourth Proportional to 524.36, 723.28 and 399.96

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Solution

The fourth proportional to 524.36, 723.28 and 399.96 is: 551.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.36 : 723.28 = 399.96 : x
  2. Step 2: Convert to fraction form
    524.36/723.28 = 399.96/x
  3. Step 3: Cross multiply
    524.36x = 723.28 × 399.96
  4. Step 4: Simplify right side
    524.36x = 289,283.07
  5. Step 5: Solve for x
    x = 289,283.07/524.36
  6. Step 6: Final answer
    x = 551.69

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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.