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Finding the Fourth Proportional to 607.83, 839.21 and 467.69

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Solution

The fourth proportional to 607.83, 839.21 and 467.69 is: 645.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.83 : 839.21 = 467.69 : x
  2. Step 2: Convert to fraction form
    607.83/839.21 = 467.69/x
  3. Step 3: Cross multiply
    607.83x = 839.21 × 467.69
  4. Step 4: Simplify right side
    607.83x = 392,483.59
  5. Step 5: Solve for x
    x = 392,483.59/607.83
  6. Step 6: Final answer
    x = 645.71

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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.