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Finding the Fourth Proportional to 1,036.65, 1,551.74 and 549.03

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Solution

The fourth proportional to 1,036.65, 1,551.74 and 549.03 is: 821.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.65 : 1,551.74 = 549.03 : x
  2. Step 2: Convert to fraction form
    1,036.65/1,551.74 = 549.03/x
  3. Step 3: Cross multiply
    1,036.65x = 1,551.74 × 549.03
  4. Step 4: Simplify right side
    1,036.65x = 851,949.07
  5. Step 5: Solve for x
    x = 851,949.07/1,036.65
  6. Step 6: Final answer
    x = 821.83

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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.