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Finding the Fourth Proportional to 472.30, 651.54 and 406.69

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Solution

The fourth proportional to 472.30, 651.54 and 406.69 is: 561.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.30 : 651.54 = 406.69 : x
  2. Step 2: Convert to fraction form
    472.30/651.54 = 406.69/x
  3. Step 3: Cross multiply
    472.30x = 651.54 × 406.69
  4. Step 4: Simplify right side
    472.30x = 264,974.70
  5. Step 5: Solve for x
    x = 264,974.70/472.30
  6. Step 6: Final answer
    x = 561.03

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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.