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Finding the Fourth Proportional to 539.39, 803.27 and 521.16

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Solution

The fourth proportional to 539.39, 803.27 and 521.16 is: 776.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.39 : 803.27 = 521.16 : x
  2. Step 2: Convert to fraction form
    539.39/803.27 = 521.16/x
  3. Step 3: Cross multiply
    539.39x = 803.27 × 521.16
  4. Step 4: Simplify right side
    539.39x = 418,632.19
  5. Step 5: Solve for x
    x = 418,632.19/539.39
  6. Step 6: Final answer
    x = 776.12

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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.