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Finding the Fourth Proportional to 472.34, 650.63 and 393.50

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Solution

The fourth proportional to 472.34, 650.63 and 393.50 is: 542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.34 : 650.63 = 393.50 : x
  2. Step 2: Convert to fraction form
    472.34/650.63 = 393.50/x
  3. Step 3: Cross multiply
    472.34x = 650.63 × 393.50
  4. Step 4: Simplify right side
    472.34x = 256,025.52
  5. Step 5: Solve for x
    x = 256,025.52/472.34
  6. Step 6: Final answer
    x = 542.03

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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.