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Finding the Fourth Proportional to 620.04, 856.04 and 371.45

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Solution

The fourth proportional to 620.04, 856.04 and 371.45 is: 512.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.04 : 856.04 = 371.45 : x
  2. Step 2: Convert to fraction form
    620.04/856.04 = 371.45/x
  3. Step 3: Cross multiply
    620.04x = 856.04 × 371.45
  4. Step 4: Simplify right side
    620.04x = 317,976.34
  5. Step 5: Solve for x
    x = 317,976.34/620.04
  6. Step 6: Final answer
    x = 512.83

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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.