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Finding the Fourth Proportional to 592.21, 888.31 and 386.87

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Solution

The fourth proportional to 592.21, 888.31 and 386.87 is: 580.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.21 : 888.31 = 386.87 : x
  2. Step 2: Convert to fraction form
    592.21/888.31 = 386.87/x
  3. Step 3: Cross multiply
    592.21x = 888.31 × 386.87
  4. Step 4: Simplify right side
    592.21x = 343,660.49
  5. Step 5: Solve for x
    x = 343,660.49/592.21
  6. Step 6: Final answer
    x = 580.31

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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.