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Finding the Fourth Proportional to 706.68, 975.14 and 411.90

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Solution

The fourth proportional to 706.68, 975.14 and 411.90 is: 568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.68 : 975.14 = 411.90 : x
  2. Step 2: Convert to fraction form
    706.68/975.14 = 411.90/x
  3. Step 3: Cross multiply
    706.68x = 975.14 × 411.90
  4. Step 4: Simplify right side
    706.68x = 401,660.17
  5. Step 5: Solve for x
    x = 401,660.17/706.68
  6. Step 6: Final answer
    x = 568.38

Related Problems

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Half scale
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Double scale
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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.