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Finding the Fourth Proportional to 472.66, 709.04 and 147.98

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Solution

The fourth proportional to 472.66, 709.04 and 147.98 is: 221.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.66 : 709.04 = 147.98 : x
  2. Step 2: Convert to fraction form
    472.66/709.04 = 147.98/x
  3. Step 3: Cross multiply
    472.66x = 709.04 × 147.98
  4. Step 4: Simplify right side
    472.66x = 104,923.74
  5. Step 5: Solve for x
    x = 104,923.74/472.66
  6. Step 6: Final answer
    x = 221.99

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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.