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Finding the Fourth Proportional to 684.07, 944.02 and 385.32

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Solution

The fourth proportional to 684.07, 944.02 and 385.32 is: 531.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.07 : 944.02 = 385.32 : x
  2. Step 2: Convert to fraction form
    684.07/944.02 = 385.32/x
  3. Step 3: Cross multiply
    684.07x = 944.02 × 385.32
  4. Step 4: Simplify right side
    684.07x = 363,749.79
  5. Step 5: Solve for x
    x = 363,749.79/684.07
  6. Step 6: Final answer
    x = 531.74

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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.