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Finding the Fourth Proportional to 1,342.80, 2,013.96 and 368.69

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Solution

The fourth proportional to 1,342.80, 2,013.96 and 368.69 is: 552.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.80 : 2,013.96 = 368.69 : x
  2. Step 2: Convert to fraction form
    1,342.80/2,013.96 = 368.69/x
  3. Step 3: Cross multiply
    1,342.80x = 2,013.96 × 368.69
  4. Step 4: Simplify right side
    1,342.80x = 742,516.84
  5. Step 5: Solve for x
    x = 742,516.84/1,342.80
  6. Step 6: Final answer
    x = 552.96

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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.