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Finding the Fourth Proportional to 360.79, 501.25 and 356.47

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Solution

The fourth proportional to 360.79, 501.25 and 356.47 is: 495.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.79 : 501.25 = 356.47 : x
  2. Step 2: Convert to fraction form
    360.79/501.25 = 356.47/x
  3. Step 3: Cross multiply
    360.79x = 501.25 × 356.47
  4. Step 4: Simplify right side
    360.79x = 178,681.33
  5. Step 5: Solve for x
    x = 178,681.33/360.79
  6. Step 6: Final answer
    x = 495.25

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.