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Finding the Fourth Proportional to 556.65, 771.42 and 548.82

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Solution

The fourth proportional to 556.65, 771.42 and 548.82 is: 760.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.65 : 771.42 = 548.82 : x
  2. Step 2: Convert to fraction form
    556.65/771.42 = 548.82/x
  3. Step 3: Cross multiply
    556.65x = 771.42 × 548.82
  4. Step 4: Simplify right side
    556.65x = 423,370.72
  5. Step 5: Solve for x
    x = 423,370.72/556.65
  6. Step 6: Final answer
    x = 760.57

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.