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Finding the Fourth Proportional to 565.38, 848.07 and 257.18

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Solution

The fourth proportional to 565.38, 848.07 and 257.18 is: 385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.38 : 848.07 = 257.18 : x
  2. Step 2: Convert to fraction form
    565.38/848.07 = 257.18/x
  3. Step 3: Cross multiply
    565.38x = 848.07 × 257.18
  4. Step 4: Simplify right side
    565.38x = 218,102.40
  5. Step 5: Solve for x
    x = 218,102.40/565.38
  6. Step 6: Final answer
    x = 385.76

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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.