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Finding the Fourth Proportional to 543.60, 810.36 and 521.82

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Solution

The fourth proportional to 543.60, 810.36 and 521.82 is: 777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.60 : 810.36 = 521.82 : x
  2. Step 2: Convert to fraction form
    543.60/810.36 = 521.82/x
  3. Step 3: Cross multiply
    543.60x = 810.36 × 521.82
  4. Step 4: Simplify right side
    543.60x = 422,862.06
  5. Step 5: Solve for x
    x = 422,862.06/543.60
  6. Step 6: Final answer
    x = 777.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.