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Finding the Fourth Proportional to 472.53, 651.53 and 306.68

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Solution

The fourth proportional to 472.53, 651.53 and 306.68 is: 422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.53 : 651.53 = 306.68 : x
  2. Step 2: Convert to fraction form
    472.53/651.53 = 306.68/x
  3. Step 3: Cross multiply
    472.53x = 651.53 × 306.68
  4. Step 4: Simplify right side
    472.53x = 199,806.43
  5. Step 5: Solve for x
    x = 199,806.43/472.53
  6. Step 6: Final answer
    x = 422.84

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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.