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Finding the Fourth Proportional to 1,353.01, 1,868.49 and 934.44

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Solution

The fourth proportional to 1,353.01, 1,868.49 and 934.44 is: 1,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.01 : 1,868.49 = 934.44 : x
  2. Step 2: Convert to fraction form
    1,353.01/1,868.49 = 934.44/x
  3. Step 3: Cross multiply
    1,353.01x = 1,868.49 × 934.44
  4. Step 4: Simplify right side
    1,353.01x = 1,745,987.12
  5. Step 5: Solve for x
    x = 1,745,987.12/1,353.01
  6. Step 6: Final answer
    x = 1,290.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.