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Finding the Fourth Proportional to 836.46, 1,254.96 and 288.63

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Solution

The fourth proportional to 836.46, 1,254.96 and 288.63 is: 433.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.46 : 1,254.96 = 288.63 : x
  2. Step 2: Convert to fraction form
    836.46/1,254.96 = 288.63/x
  3. Step 3: Cross multiply
    836.46x = 1,254.96 × 288.63
  4. Step 4: Simplify right side
    836.46x = 362,219.10
  5. Step 5: Solve for x
    x = 362,219.10/836.46
  6. Step 6: Final answer
    x = 433.04

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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.