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Finding the Fourth Proportional to 557.26, 768.45 and 370.78

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Solution

The fourth proportional to 557.26, 768.45 and 370.78 is: 511.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.26 : 768.45 = 370.78 : x
  2. Step 2: Convert to fraction form
    557.26/768.45 = 370.78/x
  3. Step 3: Cross multiply
    557.26x = 768.45 × 370.78
  4. Step 4: Simplify right side
    557.26x = 284,925.89
  5. Step 5: Solve for x
    x = 284,925.89/557.26
  6. Step 6: Final answer
    x = 511.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.