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Finding the Fourth Proportional to 620.55, 926.16 and 571.71

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Solution

The fourth proportional to 620.55, 926.16 and 571.71 is: 853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.55 : 926.16 = 571.71 : x
  2. Step 2: Convert to fraction form
    620.55/926.16 = 571.71/x
  3. Step 3: Cross multiply
    620.55x = 926.16 × 571.71
  4. Step 4: Simplify right side
    620.55x = 529,494.93
  5. Step 5: Solve for x
    x = 529,494.93/620.55
  6. Step 6: Final answer
    x = 853.27

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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.