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Finding the Fourth Proportional to 616.96, 921.02 and 571.96

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Solution

The fourth proportional to 616.96, 921.02 and 571.96 is: 853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.96 : 921.02 = 571.96 : x
  2. Step 2: Convert to fraction form
    616.96/921.02 = 571.96/x
  3. Step 3: Cross multiply
    616.96x = 921.02 × 571.96
  4. Step 4: Simplify right side
    616.96x = 526,786.60
  5. Step 5: Solve for x
    x = 526,786.60/616.96
  6. Step 6: Final answer
    x = 853.84

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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.