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Finding the Fourth Proportional to 589.60, 883.92 and 418.72

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Solution

The fourth proportional to 589.60, 883.92 and 418.72 is: 627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.60 : 883.92 = 418.72 : x
  2. Step 2: Convert to fraction form
    589.60/883.92 = 418.72/x
  3. Step 3: Cross multiply
    589.60x = 883.92 × 418.72
  4. Step 4: Simplify right side
    589.60x = 370,114.98
  5. Step 5: Solve for x
    x = 370,114.98/589.60
  6. Step 6: Final answer
    x = 627.74

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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.