Home / 916.28-1,374.16-300.04

Finding the Fourth Proportional to 916.28, 1,374.16 and 300.04

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Solution

The fourth proportional to 916.28, 1,374.16 and 300.04 is: 449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.28 : 1,374.16 = 300.04 : x
  2. Step 2: Convert to fraction form
    916.28/1,374.16 = 300.04/x
  3. Step 3: Cross multiply
    916.28x = 1,374.16 × 300.04
  4. Step 4: Simplify right side
    916.28x = 412,302.97
  5. Step 5: Solve for x
    x = 412,302.97/916.28
  6. Step 6: Final answer
    x = 449.97

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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.