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Finding the Fourth Proportional to 1,148.78, 1,723.03 and 368.75

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Solution

The fourth proportional to 1,148.78, 1,723.03 and 368.75 is: 553.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.78 : 1,723.03 = 368.75 : x
  2. Step 2: Convert to fraction form
    1,148.78/1,723.03 = 368.75/x
  3. Step 3: Cross multiply
    1,148.78x = 1,723.03 × 368.75
  4. Step 4: Simplify right side
    1,148.78x = 635,370.70
  5. Step 5: Solve for x
    x = 635,370.70/1,148.78
  6. Step 6: Final answer
    x = 553.08

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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.