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Finding the Fourth Proportional to 349.99, 482.64 and 276.16

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Solution

The fourth proportional to 349.99, 482.64 and 276.16 is: 380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.99 : 482.64 = 276.16 : x
  2. Step 2: Convert to fraction form
    349.99/482.64 = 276.16/x
  3. Step 3: Cross multiply
    349.99x = 482.64 × 276.16
  4. Step 4: Simplify right side
    349.99x = 133,285.86
  5. Step 5: Solve for x
    x = 133,285.86/349.99
  6. Step 6: Final answer
    x = 380.83

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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.