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Finding the Fourth Proportional to 472.02, 705.50 and 425.64

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Solution

The fourth proportional to 472.02, 705.50 and 425.64 is: 636.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.02 : 705.50 = 425.64 : x
  2. Step 2: Convert to fraction form
    472.02/705.50 = 425.64/x
  3. Step 3: Cross multiply
    472.02x = 705.50 × 425.64
  4. Step 4: Simplify right side
    472.02x = 300,289.02
  5. Step 5: Solve for x
    x = 300,289.02/472.02
  6. Step 6: Final answer
    x = 636.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.