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Finding the Fourth Proportional to 706.16, 974.20 and 499.44

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Solution

The fourth proportional to 706.16, 974.20 and 499.44 is: 689.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.16 : 974.20 = 499.44 : x
  2. Step 2: Convert to fraction form
    706.16/974.20 = 499.44/x
  3. Step 3: Cross multiply
    706.16x = 974.20 × 499.44
  4. Step 4: Simplify right side
    706.16x = 486,554.45
  5. Step 5: Solve for x
    x = 486,554.45/706.16
  6. Step 6: Final answer
    x = 689.01

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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.