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Finding the Fourth Proportional to 623.46, 934.90 and 190.46

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Solution

The fourth proportional to 623.46, 934.90 and 190.46 is: 285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.46 : 934.90 = 190.46 : x
  2. Step 2: Convert to fraction form
    623.46/934.90 = 190.46/x
  3. Step 3: Cross multiply
    623.46x = 934.90 × 190.46
  4. Step 4: Simplify right side
    623.46x = 178,061.05
  5. Step 5: Solve for x
    x = 178,061.05/623.46
  6. Step 6: Final answer
    x = 285.60

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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.