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Finding the Fourth Proportional to 594.21, 891.32 and 388.87

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Solution

The fourth proportional to 594.21, 891.32 and 388.87 is: 583.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.21 : 891.32 = 388.87 : x
  2. Step 2: Convert to fraction form
    594.21/891.32 = 388.87/x
  3. Step 3: Cross multiply
    594.21x = 891.32 × 388.87
  4. Step 4: Simplify right side
    594.21x = 346,607.61
  5. Step 5: Solve for x
    x = 346,607.61/594.21
  6. Step 6: Final answer
    x = 583.31

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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.