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Finding the Fourth Proportional to 1,592.34, 2,388.70 and 422.36

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Solution

The fourth proportional to 1,592.34, 2,388.70 and 422.36 is: 633.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,592.34 : 2,388.70 = 422.36 : x
  2. Step 2: Convert to fraction form
    1,592.34/2,388.70 = 422.36/x
  3. Step 3: Cross multiply
    1,592.34x = 2,388.70 × 422.36
  4. Step 4: Simplify right side
    1,592.34x = 1,008,889.22
  5. Step 5: Solve for x
    x = 1,008,889.22/1,592.34
  6. Step 6: Final answer
    x = 633.59

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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.