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Finding the Fourth Proportional to 474.74, 706.58 and 470.18

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Solution

The fourth proportional to 474.74, 706.58 and 470.18 is: 699.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.74 : 706.58 = 470.18 : x
  2. Step 2: Convert to fraction form
    474.74/706.58 = 470.18/x
  3. Step 3: Cross multiply
    474.74x = 706.58 × 470.18
  4. Step 4: Simplify right side
    474.74x = 332,217.43
  5. Step 5: Solve for x
    x = 332,217.43/474.74
  6. Step 6: Final answer
    x = 699.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.