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Finding the Fourth Proportional to 684.76, 944.98 and 374.26

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Solution

The fourth proportional to 684.76, 944.98 and 374.26 is: 516.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.76 : 944.98 = 374.26 : x
  2. Step 2: Convert to fraction form
    684.76/944.98 = 374.26/x
  3. Step 3: Cross multiply
    684.76x = 944.98 × 374.26
  4. Step 4: Simplify right side
    684.76x = 353,668.21
  5. Step 5: Solve for x
    x = 353,668.21/684.76
  6. Step 6: Final answer
    x = 516.48

Related Problems

Find fourth proportional to 342.38, 472.49 and 187.13
Half scale
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Double scale
Find fourth proportional to 685.76, 946.36 and 375.26
Similar ratio
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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.