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Finding the Fourth Proportional to 523.28, 722.13 and 290.41

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Solution

The fourth proportional to 523.28, 722.13 and 290.41 is: 400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.28 : 722.13 = 290.41 : x
  2. Step 2: Convert to fraction form
    523.28/722.13 = 290.41/x
  3. Step 3: Cross multiply
    523.28x = 722.13 × 290.41
  4. Step 4: Simplify right side
    523.28x = 209,710.16
  5. Step 5: Solve for x
    x = 209,710.16/523.28
  6. Step 6: Final answer
    x = 400.76

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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.