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Finding the Fourth Proportional to 565.16, 848 and 257.22

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Solution

The fourth proportional to 565.16, 848 and 257.22 is: 385.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.16 : 848 = 257.22 : x
  2. Step 2: Convert to fraction form
    565.16/848 = 257.22/x
  3. Step 3: Cross multiply
    565.16x = 848 × 257.22
  4. Step 4: Simplify right side
    565.16x = 218,122.56
  5. Step 5: Solve for x
    x = 218,122.56/565.16
  6. Step 6: Final answer
    x = 385.95

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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.