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Finding the Fourth Proportional to 1,495.06, 2,242.59 and 815.38

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Solution

The fourth proportional to 1,495.06, 2,242.59 and 815.38 is: 1,223.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,495.06 : 2,242.59 = 815.38 : x
  2. Step 2: Convert to fraction form
    1,495.06/2,242.59 = 815.38/x
  3. Step 3: Cross multiply
    1,495.06x = 2,242.59 × 815.38
  4. Step 4: Simplify right side
    1,495.06x = 1,828,563.03
  5. Step 5: Solve for x
    x = 1,828,563.03/1,495.06
  6. Step 6: Final answer
    x = 1,223.07

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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.