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Finding the Fourth Proportional to 669.35, 922.87 and 503.03

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Solution

The fourth proportional to 669.35, 922.87 and 503.03 is: 693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.35 : 922.87 = 503.03 : x
  2. Step 2: Convert to fraction form
    669.35/922.87 = 503.03/x
  3. Step 3: Cross multiply
    669.35x = 922.87 × 503.03
  4. Step 4: Simplify right side
    669.35x = 464,231.30
  5. Step 5: Solve for x
    x = 464,231.30/669.35
  6. Step 6: Final answer
    x = 693.56

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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.