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Finding the Fourth Proportional to 503.99, 758.79 and 394.90

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Solution

The fourth proportional to 503.99, 758.79 and 394.90 is: 594.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.99 : 758.79 = 394.90 : x
  2. Step 2: Convert to fraction form
    503.99/758.79 = 394.90/x
  3. Step 3: Cross multiply
    503.99x = 758.79 × 394.90
  4. Step 4: Simplify right side
    503.99x = 299,646.17
  5. Step 5: Solve for x
    x = 299,646.17/503.99
  6. Step 6: Final answer
    x = 594.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.