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Finding the Fourth Proportional to 472.01, 706.46 and 288.54

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Solution

The fourth proportional to 472.01, 706.46 and 288.54 is: 431.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.01 : 706.46 = 288.54 : x
  2. Step 2: Convert to fraction form
    472.01/706.46 = 288.54/x
  3. Step 3: Cross multiply
    472.01x = 706.46 × 288.54
  4. Step 4: Simplify right side
    472.01x = 203,840.53
  5. Step 5: Solve for x
    x = 203,840.53/472.01
  6. Step 6: Final answer
    x = 431.86

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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.