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Finding the Fourth Proportional to 539.10, 803.34 and 519.48

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Solution

The fourth proportional to 539.10, 803.34 and 519.48 is: 774.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.10 : 803.34 = 519.48 : x
  2. Step 2: Convert to fraction form
    539.10/803.34 = 519.48/x
  3. Step 3: Cross multiply
    539.10x = 803.34 × 519.48
  4. Step 4: Simplify right side
    539.10x = 417,319.06
  5. Step 5: Solve for x
    x = 417,319.06/539.10
  6. Step 6: Final answer
    x = 774.10

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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.