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Finding the Fourth Proportional to 539.02, 808.90 and 308.09

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Solution

The fourth proportional to 539.02, 808.90 and 308.09 is: 462.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.02 : 808.90 = 308.09 : x
  2. Step 2: Convert to fraction form
    539.02/808.90 = 308.09/x
  3. Step 3: Cross multiply
    539.02x = 808.90 × 308.09
  4. Step 4: Simplify right side
    539.02x = 249,216.99
  5. Step 5: Solve for x
    x = 249,216.99/539.02
  6. Step 6: Final answer
    x = 462.36

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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.