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Finding the Fourth Proportional to 607.98, 839.04 and 346.05

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Solution

The fourth proportional to 607.98, 839.04 and 346.05 is: 477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.98 : 839.04 = 346.05 : x
  2. Step 2: Convert to fraction form
    607.98/839.04 = 346.05/x
  3. Step 3: Cross multiply
    607.98x = 839.04 × 346.05
  4. Step 4: Simplify right side
    607.98x = 290,349.79
  5. Step 5: Solve for x
    x = 290,349.79/607.98
  6. Step 6: Final answer
    x = 477.56

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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.