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Finding the Fourth Proportional to 1,362.55, 2,043.81 and 714.55

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Solution

The fourth proportional to 1,362.55, 2,043.81 and 714.55 is: 1,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.55 : 2,043.81 = 714.55 : x
  2. Step 2: Convert to fraction form
    1,362.55/2,043.81 = 714.55/x
  3. Step 3: Cross multiply
    1,362.55x = 2,043.81 × 714.55
  4. Step 4: Simplify right side
    1,362.55x = 1,460,404.44
  5. Step 5: Solve for x
    x = 1,460,404.44/1,362.55
  6. Step 6: Final answer
    x = 1,071.82

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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.