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Finding the Fourth Proportional to 472.03, 651.24 and 285.45

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Solution

The fourth proportional to 472.03, 651.24 and 285.45 is: 393.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.03 : 651.24 = 285.45 : x
  2. Step 2: Convert to fraction form
    472.03/651.24 = 285.45/x
  3. Step 3: Cross multiply
    472.03x = 651.24 × 285.45
  4. Step 4: Simplify right side
    472.03x = 185,895.85
  5. Step 5: Solve for x
    x = 185,895.85/472.03
  6. Step 6: Final answer
    x = 393.82

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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.