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Finding the Fourth Proportional to 540.05, 808.81 and 356.99

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Solution

The fourth proportional to 540.05, 808.81 and 356.99 is: 534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.05 : 808.81 = 356.99 : x
  2. Step 2: Convert to fraction form
    540.05/808.81 = 356.99/x
  3. Step 3: Cross multiply
    540.05x = 808.81 × 356.99
  4. Step 4: Simplify right side
    540.05x = 288,735.30
  5. Step 5: Solve for x
    x = 288,735.30/540.05
  6. Step 6: Final answer
    x = 534.65

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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.