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Finding the Fourth Proportional to 684.29, 944.31 and 373.79

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Solution

The fourth proportional to 684.29, 944.31 and 373.79 is: 515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.29 : 944.31 = 373.79 : x
  2. Step 2: Convert to fraction form
    684.29/944.31 = 373.79/x
  3. Step 3: Cross multiply
    684.29x = 944.31 × 373.79
  4. Step 4: Simplify right side
    684.29x = 352,968.91
  5. Step 5: Solve for x
    x = 352,968.91/684.29
  6. Step 6: Final answer
    x = 515.82

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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.