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Finding the Fourth Proportional to 1,036.50, 1,554.99 and 343.20

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Solution

The fourth proportional to 1,036.50, 1,554.99 and 343.20 is: 514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.50 : 1,554.99 = 343.20 : x
  2. Step 2: Convert to fraction form
    1,036.50/1,554.99 = 343.20/x
  3. Step 3: Cross multiply
    1,036.50x = 1,554.99 × 343.20
  4. Step 4: Simplify right side
    1,036.50x = 533,672.57
  5. Step 5: Solve for x
    x = 533,672.57/1,036.50
  6. Step 6: Final answer
    x = 514.88

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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.