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Finding the Fourth Proportional to 565.86, 848.37 and 257.55

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Solution

The fourth proportional to 565.86, 848.37 and 257.55 is: 386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.86 : 848.37 = 257.55 : x
  2. Step 2: Convert to fraction form
    565.86/848.37 = 257.55/x
  3. Step 3: Cross multiply
    565.86x = 848.37 × 257.55
  4. Step 4: Simplify right side
    565.86x = 218,497.69
  5. Step 5: Solve for x
    x = 218,497.69/565.86
  6. Step 6: Final answer
    x = 386.13

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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.