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Finding the Fourth Proportional to 647.73, 893.84 and 353.00

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Solution

The fourth proportional to 647.73, 893.84 and 353.00 is: 487.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.73 : 893.84 = 353.00 : x
  2. Step 2: Convert to fraction form
    647.73/893.84 = 353.00/x
  3. Step 3: Cross multiply
    647.73x = 893.84 × 353.00
  4. Step 4: Simplify right side
    647.73x = 315,519.29
  5. Step 5: Solve for x
    x = 315,519.29/647.73
  6. Step 6: Final answer
    x = 487.12

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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.