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Finding the Fourth Proportional to 610.62, 842.63 and 345.03

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Solution

The fourth proportional to 610.62, 842.63 and 345.03 is: 476.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.62 : 842.63 = 345.03 : x
  2. Step 2: Convert to fraction form
    610.62/842.63 = 345.03/x
  3. Step 3: Cross multiply
    610.62x = 842.63 × 345.03
  4. Step 4: Simplify right side
    610.62x = 290,733.49
  5. Step 5: Solve for x
    x = 290,733.49/610.62
  6. Step 6: Final answer
    x = 476.13

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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.