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Finding the Fourth Proportional to 607.28, 838 and 374.40

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Solution

The fourth proportional to 607.28, 838 and 374.40 is: 516.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.28 : 838 = 374.40 : x
  2. Step 2: Convert to fraction form
    607.28/838 = 374.40/x
  3. Step 3: Cross multiply
    607.28x = 838 × 374.40
  4. Step 4: Simplify right side
    607.28x = 313,747.20
  5. Step 5: Solve for x
    x = 313,747.20/607.28
  6. Step 6: Final answer
    x = 516.64

Related Problems

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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.