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Finding the Fourth Proportional to 662.37, 993.65 and 384.86

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Solution

The fourth proportional to 662.37, 993.65 and 384.86 is: 577.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.37 : 993.65 = 384.86 : x
  2. Step 2: Convert to fraction form
    662.37/993.65 = 384.86/x
  3. Step 3: Cross multiply
    662.37x = 993.65 × 384.86
  4. Step 4: Simplify right side
    662.37x = 382,411.11
  5. Step 5: Solve for x
    x = 382,411.11/662.37
  6. Step 6: Final answer
    x = 577.34

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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.