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Finding the Fourth Proportional to 472.07, 707.39 and 228.30

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Solution

The fourth proportional to 472.07, 707.39 and 228.30 is: 342.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.07 : 707.39 = 228.30 : x
  2. Step 2: Convert to fraction form
    472.07/707.39 = 228.30/x
  3. Step 3: Cross multiply
    472.07x = 707.39 × 228.30
  4. Step 4: Simplify right side
    472.07x = 161,496.00
  5. Step 5: Solve for x
    x = 161,496.00/472.07
  6. Step 6: Final answer
    x = 342.11

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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.