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Finding the Fourth Proportional to 565.65, 848.76 and 257.46

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Solution

The fourth proportional to 565.65, 848.76 and 257.46 is: 386.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.65 : 848.76 = 257.46 : x
  2. Step 2: Convert to fraction form
    565.65/848.76 = 257.46/x
  3. Step 3: Cross multiply
    565.65x = 848.76 × 257.46
  4. Step 4: Simplify right side
    565.65x = 218,517.60
  5. Step 5: Solve for x
    x = 218,517.60/565.65
  6. Step 6: Final answer
    x = 386.31

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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.