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Finding the Fourth Proportional to 500.71, 690.36 and 382.83

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Solution

The fourth proportional to 500.71, 690.36 and 382.83 is: 527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.71 : 690.36 = 382.83 : x
  2. Step 2: Convert to fraction form
    500.71/690.36 = 382.83/x
  3. Step 3: Cross multiply
    500.71x = 690.36 × 382.83
  4. Step 4: Simplify right side
    500.71x = 264,288.60
  5. Step 5: Solve for x
    x = 264,288.60/500.71
  6. Step 6: Final answer
    x = 527.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.