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Finding the Fourth Proportional to 607.93, 839.33 and 467.78

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Solution

The fourth proportional to 607.93, 839.33 and 467.78 is: 645.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.93 : 839.33 = 467.78 : x
  2. Step 2: Convert to fraction form
    607.93/839.33 = 467.78/x
  3. Step 3: Cross multiply
    607.93x = 839.33 × 467.78
  4. Step 4: Simplify right side
    607.93x = 392,621.79
  5. Step 5: Solve for x
    x = 392,621.79/607.93
  6. Step 6: Final answer
    x = 645.83

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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.