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Finding the Fourth Proportional to 623.60, 934.36 and 440.62

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Solution

The fourth proportional to 623.60, 934.36 and 440.62 is: 660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.60 : 934.36 = 440.62 : x
  2. Step 2: Convert to fraction form
    623.60/934.36 = 440.62/x
  3. Step 3: Cross multiply
    623.60x = 934.36 × 440.62
  4. Step 4: Simplify right side
    623.60x = 411,697.70
  5. Step 5: Solve for x
    x = 411,697.70/623.60
  6. Step 6: Final answer
    x = 660.20

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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.