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Finding the Fourth Proportional to 405.84, 559.89 and 250.50

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Solution

The fourth proportional to 405.84, 559.89 and 250.50 is: 345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.84 : 559.89 = 250.50 : x
  2. Step 2: Convert to fraction form
    405.84/559.89 = 250.50/x
  3. Step 3: Cross multiply
    405.84x = 559.89 × 250.50
  4. Step 4: Simplify right side
    405.84x = 140,252.45
  5. Step 5: Solve for x
    x = 140,252.45/405.84
  6. Step 6: Final answer
    x = 345.59

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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.