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Finding the Fourth Proportional to 565.75, 849.06 and 393.61

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Solution

The fourth proportional to 565.75, 849.06 and 393.61 is: 590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.75 : 849.06 = 393.61 : x
  2. Step 2: Convert to fraction form
    565.75/849.06 = 393.61/x
  3. Step 3: Cross multiply
    565.75x = 849.06 × 393.61
  4. Step 4: Simplify right side
    565.75x = 334,198.51
  5. Step 5: Solve for x
    x = 334,198.51/565.75
  6. Step 6: Final answer
    x = 590.72

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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.