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Finding the Fourth Proportional to 617.93, 852.80 and 355.94

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Solution

The fourth proportional to 617.93, 852.80 and 355.94 is: 491.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.93 : 852.80 = 355.94 : x
  2. Step 2: Convert to fraction form
    617.93/852.80 = 355.94/x
  3. Step 3: Cross multiply
    617.93x = 852.80 × 355.94
  4. Step 4: Simplify right side
    617.93x = 303,545.63
  5. Step 5: Solve for x
    x = 303,545.63/617.93
  6. Step 6: Final answer
    x = 491.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.