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Finding the Fourth Proportional to 500.36, 690.14 and 353.04

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Solution

The fourth proportional to 500.36, 690.14 and 353.04 is: 486.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.36 : 690.14 = 353.04 : x
  2. Step 2: Convert to fraction form
    500.36/690.14 = 353.04/x
  3. Step 3: Cross multiply
    500.36x = 690.14 × 353.04
  4. Step 4: Simplify right side
    500.36x = 243,647.03
  5. Step 5: Solve for x
    x = 243,647.03/500.36
  6. Step 6: Final answer
    x = 486.94

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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.