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Finding the Fourth Proportional to 651.36, 981.12 and 550.92

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Solution

The fourth proportional to 651.36, 981.12 and 550.92 is: 829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.36 : 981.12 = 550.92 : x
  2. Step 2: Convert to fraction form
    651.36/981.12 = 550.92/x
  3. Step 3: Cross multiply
    651.36x = 981.12 × 550.92
  4. Step 4: Simplify right side
    651.36x = 540,518.63
  5. Step 5: Solve for x
    x = 540,518.63/651.36
  6. Step 6: Final answer
    x = 829.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.