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Finding the Fourth Proportional to 303.32, 418.62 and 277.40

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Solution

The fourth proportional to 303.32, 418.62 and 277.40 is: 382.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.32 : 418.62 = 277.40 : x
  2. Step 2: Convert to fraction form
    303.32/418.62 = 277.40/x
  3. Step 3: Cross multiply
    303.32x = 418.62 × 277.40
  4. Step 4: Simplify right side
    303.32x = 116,125.19
  5. Step 5: Solve for x
    x = 116,125.19/303.32
  6. Step 6: Final answer
    x = 382.85

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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.