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Finding the Fourth Proportional to 385.44, 577.25 and 263.34

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Solution

The fourth proportional to 385.44, 577.25 and 263.34 is: 394.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.44 : 577.25 = 263.34 : x
  2. Step 2: Convert to fraction form
    385.44/577.25 = 263.34/x
  3. Step 3: Cross multiply
    385.44x = 577.25 × 263.34
  4. Step 4: Simplify right side
    385.44x = 152,013.02
  5. Step 5: Solve for x
    x = 152,013.02/385.44
  6. Step 6: Final answer
    x = 394.39

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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.