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Finding the Fourth Proportional to 472.46, 651.54 and 306.72

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Solution

The fourth proportional to 472.46, 651.54 and 306.72 is: 422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.46 : 651.54 = 306.72 : x
  2. Step 2: Convert to fraction form
    472.46/651.54 = 306.72/x
  3. Step 3: Cross multiply
    472.46x = 651.54 × 306.72
  4. Step 4: Simplify right side
    472.46x = 199,840.35
  5. Step 5: Solve for x
    x = 199,840.35/472.46
  6. Step 6: Final answer
    x = 422.98

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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.