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Finding the Fourth Proportional to 602.26, 831.17 and 381.23

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Solution

The fourth proportional to 602.26, 831.17 and 381.23 is: 526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.26 : 831.17 = 381.23 : x
  2. Step 2: Convert to fraction form
    602.26/831.17 = 381.23/x
  3. Step 3: Cross multiply
    602.26x = 831.17 × 381.23
  4. Step 4: Simplify right side
    602.26x = 316,866.94
  5. Step 5: Solve for x
    x = 316,866.94/602.26
  6. Step 6: Final answer
    x = 526.13

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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.