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Finding the Fourth Proportional to 589.60, 884.40 and 415.90

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Solution

The fourth proportional to 589.60, 884.40 and 415.90 is: 623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.60 : 884.40 = 415.90 : x
  2. Step 2: Convert to fraction form
    589.60/884.40 = 415.90/x
  3. Step 3: Cross multiply
    589.60x = 884.40 × 415.90
  4. Step 4: Simplify right side
    589.60x = 367,821.96
  5. Step 5: Solve for x
    x = 367,821.96/589.60
  6. Step 6: Final answer
    x = 623.85

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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.