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Finding the Fourth Proportional to 706.30, 974.66 and 411.53

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Solution

The fourth proportional to 706.30, 974.66 and 411.53 is: 567.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.30 : 974.66 = 411.53 : x
  2. Step 2: Convert to fraction form
    706.30/974.66 = 411.53/x
  3. Step 3: Cross multiply
    706.30x = 974.66 × 411.53
  4. Step 4: Simplify right side
    706.30x = 401,094.90
  5. Step 5: Solve for x
    x = 401,094.90/706.30
  6. Step 6: Final answer
    x = 567.88

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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.