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Finding the Fourth Proportional to 472, 651.50 and 379.06

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Solution

The fourth proportional to 472, 651.50 and 379.06 is: 523.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    472 : 651.50 = 379.06 : x
  2. Step 2: Convert to fraction form
    472/651.50 = 379.06/x
  3. Step 3: Cross multiply
    472x = 651.50 × 379.06
  4. Step 4: Simplify right side
    472x = 246,957.59
  5. Step 5: Solve for x
    x = 246,957.59/472
  6. Step 6: Final answer
    x = 523.22

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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.