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Finding the Fourth Proportional to 610.71, 842.73 and 345.18

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Solution

The fourth proportional to 610.71, 842.73 and 345.18 is: 476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.71 : 842.73 = 345.18 : x
  2. Step 2: Convert to fraction form
    610.71/842.73 = 345.18/x
  3. Step 3: Cross multiply
    610.71x = 842.73 × 345.18
  4. Step 4: Simplify right side
    610.71x = 290,893.54
  5. Step 5: Solve for x
    x = 290,893.54/610.71
  6. Step 6: Final answer
    x = 476.32

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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.