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Finding the Fourth Proportional to 607.87, 839.04 and 411.38

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Solution

The fourth proportional to 607.87, 839.04 and 411.38 is: 567.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.87 : 839.04 = 411.38 : x
  2. Step 2: Convert to fraction form
    607.87/839.04 = 411.38/x
  3. Step 3: Cross multiply
    607.87x = 839.04 × 411.38
  4. Step 4: Simplify right side
    607.87x = 345,160.08
  5. Step 5: Solve for x
    x = 345,160.08/607.87
  6. Step 6: Final answer
    x = 567.82

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.