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Finding the Fourth Proportional to 831.71, 1,244.39 and 501.43

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Solution

The fourth proportional to 831.71, 1,244.39 and 501.43 is: 750.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    831.71 : 1,244.39 = 501.43 : x
  2. Step 2: Convert to fraction form
    831.71/1,244.39 = 501.43/x
  3. Step 3: Cross multiply
    831.71x = 1,244.39 × 501.43
  4. Step 4: Simplify right side
    831.71x = 623,968.86
  5. Step 5: Solve for x
    x = 623,968.86/831.71
  6. Step 6: Final answer
    x = 750.23

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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.