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Finding the Fourth Proportional to 565.09, 847.62 and 154.21

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Solution

The fourth proportional to 565.09, 847.62 and 154.21 is: 231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.09 : 847.62 = 154.21 : x
  2. Step 2: Convert to fraction form
    565.09/847.62 = 154.21/x
  3. Step 3: Cross multiply
    565.09x = 847.62 × 154.21
  4. Step 4: Simplify right side
    565.09x = 130,711.48
  5. Step 5: Solve for x
    x = 130,711.48/565.09
  6. Step 6: Final answer
    x = 231.31

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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.