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Finding the Fourth Proportional to 556.77, 771.59 and 548.94

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Solution

The fourth proportional to 556.77, 771.59 and 548.94 is: 760.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.77 : 771.59 = 548.94 : x
  2. Step 2: Convert to fraction form
    556.77/771.59 = 548.94/x
  3. Step 3: Cross multiply
    556.77x = 771.59 × 548.94
  4. Step 4: Simplify right side
    556.77x = 423,556.61
  5. Step 5: Solve for x
    x = 423,556.61/556.77
  6. Step 6: Final answer
    x = 760.74

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1.5x scale

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.