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Finding the Fourth Proportional to 470.38, 705.44 and 250.70

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Solution

The fourth proportional to 470.38, 705.44 and 250.70 is: 375.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.38 : 705.44 = 250.70 : x
  2. Step 2: Convert to fraction form
    470.38/705.44 = 250.70/x
  3. Step 3: Cross multiply
    470.38x = 705.44 × 250.70
  4. Step 4: Simplify right side
    470.38x = 176,853.81
  5. Step 5: Solve for x
    x = 176,853.81/470.38
  6. Step 6: Final answer
    x = 375.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.