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Finding the Fourth Proportional to 555.26, 831.96 and 372.70

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Solution

The fourth proportional to 555.26, 831.96 and 372.70 is: 558.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.26 : 831.96 = 372.70 : x
  2. Step 2: Convert to fraction form
    555.26/831.96 = 372.70/x
  3. Step 3: Cross multiply
    555.26x = 831.96 × 372.70
  4. Step 4: Simplify right side
    555.26x = 310,071.49
  5. Step 5: Solve for x
    x = 310,071.49/555.26
  6. Step 6: Final answer
    x = 558.43

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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.