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Finding the Fourth Proportional to 493.99, 737.98 and 319.23

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Solution

The fourth proportional to 493.99, 737.98 and 319.23 is: 476.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.99 : 737.98 = 319.23 : x
  2. Step 2: Convert to fraction form
    493.99/737.98 = 319.23/x
  3. Step 3: Cross multiply
    493.99x = 737.98 × 319.23
  4. Step 4: Simplify right side
    493.99x = 235,585.36
  5. Step 5: Solve for x
    x = 235,585.36/493.99
  6. Step 6: Final answer
    x = 476.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.