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Finding the Fourth Proportional to 589.61, 883.14 and 426.94

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Solution

The fourth proportional to 589.61, 883.14 and 426.94 is: 639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.61 : 883.14 = 426.94 : x
  2. Step 2: Convert to fraction form
    589.61/883.14 = 426.94/x
  3. Step 3: Cross multiply
    589.61x = 883.14 × 426.94
  4. Step 4: Simplify right side
    589.61x = 377,043.98
  5. Step 5: Solve for x
    x = 377,043.98/589.61
  6. Step 6: Final answer
    x = 639.48

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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.