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Finding the Fourth Proportional to 607.38, 838.38 and 411.42

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Solution

The fourth proportional to 607.38, 838.38 and 411.42 is: 567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.38 : 838.38 = 411.42 : x
  2. Step 2: Convert to fraction form
    607.38/838.38 = 411.42/x
  3. Step 3: Cross multiply
    607.38x = 838.38 × 411.42
  4. Step 4: Simplify right side
    607.38x = 344,926.30
  5. Step 5: Solve for x
    x = 344,926.30/607.38
  6. Step 6: Final answer
    x = 567.89

Related Problems

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Half scale
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Double scale
Find fourth proportional to 608.38, 839.76 and 412.42
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.