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Finding the Fourth Proportional to 831.03, 1,246.76 and 740.35

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Solution

The fourth proportional to 831.03, 1,246.76 and 740.35 is: 1,110.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    831.03 : 1,246.76 = 740.35 : x
  2. Step 2: Convert to fraction form
    831.03/1,246.76 = 740.35/x
  3. Step 3: Cross multiply
    831.03x = 1,246.76 × 740.35
  4. Step 4: Simplify right side
    831.03x = 923,038.77
  5. Step 5: Solve for x
    x = 923,038.77/831.03
  6. Step 6: Final answer
    x = 1,110.72

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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.