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Finding the Fourth Proportional to 377.34, 520.80 and 259.63

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Solution

The fourth proportional to 377.34, 520.80 and 259.63 is: 358.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.34 : 520.80 = 259.63 : x
  2. Step 2: Convert to fraction form
    377.34/520.80 = 259.63/x
  3. Step 3: Cross multiply
    377.34x = 520.80 × 259.63
  4. Step 4: Simplify right side
    377.34x = 135,215.30
  5. Step 5: Solve for x
    x = 135,215.30/377.34
  6. Step 6: Final answer
    x = 358.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.