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Finding the Fourth Proportional to 623.33, 935.28 and 298.70

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Solution

The fourth proportional to 623.33, 935.28 and 298.70 is: 448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.33 : 935.28 = 298.70 : x
  2. Step 2: Convert to fraction form
    623.33/935.28 = 298.70/x
  3. Step 3: Cross multiply
    623.33x = 935.28 × 298.70
  4. Step 4: Simplify right side
    623.33x = 279,363.46
  5. Step 5: Solve for x
    x = 279,363.46/623.33
  6. Step 6: Final answer
    x = 448.18

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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.