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Finding the Fourth Proportional to 349.99, 483.33 and 288.43

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Solution

The fourth proportional to 349.99, 483.33 and 288.43 is: 398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.99 : 483.33 = 288.43 : x
  2. Step 2: Convert to fraction form
    349.99/483.33 = 288.43/x
  3. Step 3: Cross multiply
    349.99x = 483.33 × 288.43
  4. Step 4: Simplify right side
    349.99x = 139,406.75
  5. Step 5: Solve for x
    x = 139,406.75/349.99
  6. Step 6: Final answer
    x = 398.32

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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.