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Finding the Fourth Proportional to 472.80, 709.44 and 184.32

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Solution

The fourth proportional to 472.80, 709.44 and 184.32 is: 276.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.80 : 709.44 = 184.32 : x
  2. Step 2: Convert to fraction form
    472.80/709.44 = 184.32/x
  3. Step 3: Cross multiply
    472.80x = 709.44 × 184.32
  4. Step 4: Simplify right side
    472.80x = 130,763.98
  5. Step 5: Solve for x
    x = 130,763.98/472.80
  6. Step 6: Final answer
    x = 276.57

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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.