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Finding the Fourth Proportional to 553.86, 831.78 and 525.51

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Solution

The fourth proportional to 553.86, 831.78 and 525.51 is: 789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.86 : 831.78 = 525.51 : x
  2. Step 2: Convert to fraction form
    553.86/831.78 = 525.51/x
  3. Step 3: Cross multiply
    553.86x = 831.78 × 525.51
  4. Step 4: Simplify right side
    553.86x = 437,108.71
  5. Step 5: Solve for x
    x = 437,108.71/553.86
  6. Step 6: Final answer
    x = 789.20

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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.