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Finding the Fourth Proportional to 684.21, 944.19 and 373.71

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Solution

The fourth proportional to 684.21, 944.19 and 373.71 is: 515.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.21 : 944.19 = 373.71 : x
  2. Step 2: Convert to fraction form
    684.21/944.19 = 373.71/x
  3. Step 3: Cross multiply
    684.21x = 944.19 × 373.71
  4. Step 4: Simplify right side
    684.21x = 352,853.24
  5. Step 5: Solve for x
    x = 352,853.24/684.21
  6. Step 6: Final answer
    x = 515.71

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Double scale
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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.