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Finding the Fourth Proportional to 473.26, 708.65 and 380.91

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Solution

The fourth proportional to 473.26, 708.65 and 380.91 is: 570.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.26 : 708.65 = 380.91 : x
  2. Step 2: Convert to fraction form
    473.26/708.65 = 380.91/x
  3. Step 3: Cross multiply
    473.26x = 708.65 × 380.91
  4. Step 4: Simplify right side
    473.26x = 269,931.87
  5. Step 5: Solve for x
    x = 269,931.87/473.26
  6. Step 6: Final answer
    x = 570.37

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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.