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Finding the Fourth Proportional to 571.03, 852.19 and 556.45

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Solution

The fourth proportional to 571.03, 852.19 and 556.45 is: 830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.03 : 852.19 = 556.45 : x
  2. Step 2: Convert to fraction form
    571.03/852.19 = 556.45/x
  3. Step 3: Cross multiply
    571.03x = 852.19 × 556.45
  4. Step 4: Simplify right side
    571.03x = 474,197.60
  5. Step 5: Solve for x
    x = 474,197.60/571.03
  6. Step 6: Final answer
    x = 830.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.