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Finding the Fourth Proportional to 556.86, 768.49 and 370.03

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Solution

The fourth proportional to 556.86, 768.49 and 370.03 is: 510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.86 : 768.49 = 370.03 : x
  2. Step 2: Convert to fraction form
    556.86/768.49 = 370.03/x
  3. Step 3: Cross multiply
    556.86x = 768.49 × 370.03
  4. Step 4: Simplify right side
    556.86x = 284,358.66
  5. Step 5: Solve for x
    x = 284,358.66/556.86
  6. Step 6: Final answer
    x = 510.65

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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.