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Finding the Fourth Proportional to 623.25, 935.28 and 281.25

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Solution

The fourth proportional to 623.25, 935.28 and 281.25 is: 422.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.25 : 935.28 = 281.25 : x
  2. Step 2: Convert to fraction form
    623.25/935.28 = 281.25/x
  3. Step 3: Cross multiply
    623.25x = 935.28 × 281.25
  4. Step 4: Simplify right side
    623.25x = 263,047.50
  5. Step 5: Solve for x
    x = 263,047.50/623.25
  6. Step 6: Final answer
    x = 422.06

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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.