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Finding the Fourth Proportional to 602.88, 831.25 and 443.31

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Solution

The fourth proportional to 602.88, 831.25 and 443.31 is: 611.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.88 : 831.25 = 443.31 : x
  2. Step 2: Convert to fraction form
    602.88/831.25 = 443.31/x
  3. Step 3: Cross multiply
    602.88x = 831.25 × 443.31
  4. Step 4: Simplify right side
    602.88x = 368,501.44
  5. Step 5: Solve for x
    x = 368,501.44/602.88
  6. Step 6: Final answer
    x = 611.24

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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.