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Finding the Fourth Proportional to 489.36, 730.54 and 472.26

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Solution

The fourth proportional to 489.36, 730.54 and 472.26 is: 705.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.36 : 730.54 = 472.26 : x
  2. Step 2: Convert to fraction form
    489.36/730.54 = 472.26/x
  3. Step 3: Cross multiply
    489.36x = 730.54 × 472.26
  4. Step 4: Simplify right side
    489.36x = 345,004.82
  5. Step 5: Solve for x
    x = 345,004.82/489.36
  6. Step 6: Final answer
    x = 705.01

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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.