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Finding the Fourth Proportional to 622.42, 932.32 and 416.32

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Solution

The fourth proportional to 622.42, 932.32 and 416.32 is: 623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.42 : 932.32 = 416.32 : x
  2. Step 2: Convert to fraction form
    622.42/932.32 = 416.32/x
  3. Step 3: Cross multiply
    622.42x = 932.32 × 416.32
  4. Step 4: Simplify right side
    622.42x = 388,143.46
  5. Step 5: Solve for x
    x = 388,143.46/622.42
  6. Step 6: Final answer
    x = 623.60

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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.