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Finding the Fourth Proportional to 375.22, 563.10 and 259.66

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Solution

The fourth proportional to 375.22, 563.10 and 259.66 is: 389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.22 : 563.10 = 259.66 : x
  2. Step 2: Convert to fraction form
    375.22/563.10 = 259.66/x
  3. Step 3: Cross multiply
    375.22x = 563.10 × 259.66
  4. Step 4: Simplify right side
    375.22x = 146,214.55
  5. Step 5: Solve for x
    x = 146,214.55/375.22
  6. Step 6: Final answer
    x = 389.68

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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.