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Finding the Fourth Proportional to 622.32, 933.87 and 561.54

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Solution

The fourth proportional to 622.32, 933.87 and 561.54 is: 842.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.32 : 933.87 = 561.54 : x
  2. Step 2: Convert to fraction form
    622.32/933.87 = 561.54/x
  3. Step 3: Cross multiply
    622.32x = 933.87 × 561.54
  4. Step 4: Simplify right side
    622.32x = 524,405.36
  5. Step 5: Solve for x
    x = 524,405.36/622.32
  6. Step 6: Final answer
    x = 842.66

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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.