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Finding the Fourth Proportional to 489.09, 732.56 and 359.32

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Solution

The fourth proportional to 489.09, 732.56 and 359.32 is: 538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.09 : 732.56 = 359.32 : x
  2. Step 2: Convert to fraction form
    489.09/732.56 = 359.32/x
  3. Step 3: Cross multiply
    489.09x = 732.56 × 359.32
  4. Step 4: Simplify right side
    489.09x = 263,223.46
  5. Step 5: Solve for x
    x = 263,223.46/489.09
  6. Step 6: Final answer
    x = 538.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.