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Finding the Fourth Proportional to 566.18, 848.78 and 257.92

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Solution

The fourth proportional to 566.18, 848.78 and 257.92 is: 386.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.18 : 848.78 = 257.92 : x
  2. Step 2: Convert to fraction form
    566.18/848.78 = 257.92/x
  3. Step 3: Cross multiply
    566.18x = 848.78 × 257.92
  4. Step 4: Simplify right side
    566.18x = 218,911.80
  5. Step 5: Solve for x
    x = 218,911.80/566.18
  6. Step 6: Final answer
    x = 386.65

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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.