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Finding the Fourth Proportional to 306.63, 459.74 and 130.84

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Solution

The fourth proportional to 306.63, 459.74 and 130.84 is: 196.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.63 : 459.74 = 130.84 : x
  2. Step 2: Convert to fraction form
    306.63/459.74 = 130.84/x
  3. Step 3: Cross multiply
    306.63x = 459.74 × 130.84
  4. Step 4: Simplify right side
    306.63x = 60,152.38
  5. Step 5: Solve for x
    x = 60,152.38/306.63
  6. Step 6: Final answer
    x = 196.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.