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Finding the Fourth Proportional to 706.30, 973.70 and 484.90

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Solution

The fourth proportional to 706.30, 973.70 and 484.90 is: 668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.30 : 973.70 = 484.90 : x
  2. Step 2: Convert to fraction form
    706.30/973.70 = 484.90/x
  3. Step 3: Cross multiply
    706.30x = 973.70 × 484.90
  4. Step 4: Simplify right side
    706.30x = 472,147.13
  5. Step 5: Solve for x
    x = 472,147.13/706.30
  6. Step 6: Final answer
    x = 668.48

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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.