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Finding the Fourth Proportional to 607.22, 837.72 and 386.09

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Solution

The fourth proportional to 607.22, 837.72 and 386.09 is: 532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.22 : 837.72 = 386.09 : x
  2. Step 2: Convert to fraction form
    607.22/837.72 = 386.09/x
  3. Step 3: Cross multiply
    607.22x = 837.72 × 386.09
  4. Step 4: Simplify right side
    607.22x = 323,435.31
  5. Step 5: Solve for x
    x = 323,435.31/607.22
  6. Step 6: Final answer
    x = 532.65

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1.5x scale

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.