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Finding the Fourth Proportional to 539.65, 803.73 and 520.51

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Solution

The fourth proportional to 539.65, 803.73 and 520.51 is: 775.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.65 : 803.73 = 520.51 : x
  2. Step 2: Convert to fraction form
    539.65/803.73 = 520.51/x
  3. Step 3: Cross multiply
    539.65x = 803.73 × 520.51
  4. Step 4: Simplify right side
    539.65x = 418,349.50
  5. Step 5: Solve for x
    x = 418,349.50/539.65
  6. Step 6: Final answer
    x = 775.22

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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.