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Finding the Fourth Proportional to 503.60, 694.96 and 282.55

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Solution

The fourth proportional to 503.60, 694.96 and 282.55 is: 389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.60 : 694.96 = 282.55 : x
  2. Step 2: Convert to fraction form
    503.60/694.96 = 282.55/x
  3. Step 3: Cross multiply
    503.60x = 694.96 × 282.55
  4. Step 4: Simplify right side
    503.60x = 196,356.06
  5. Step 5: Solve for x
    x = 196,356.06/503.60
  6. Step 6: Final answer
    x = 389.91

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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.