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Finding the Fourth Proportional to 541.24, 810.90 and 521.24

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Solution

The fourth proportional to 541.24, 810.90 and 521.24 is: 780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.24 : 810.90 = 521.24 : x
  2. Step 2: Convert to fraction form
    541.24/810.90 = 521.24/x
  3. Step 3: Cross multiply
    541.24x = 810.90 × 521.24
  4. Step 4: Simplify right side
    541.24x = 422,673.52
  5. Step 5: Solve for x
    x = 422,673.52/541.24
  6. Step 6: Final answer
    x = 780.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.