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Finding the Fourth Proportional to 1,258.02, 1,748.12 and 1,244.52

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Solution

The fourth proportional to 1,258.02, 1,748.12 and 1,244.52 is: 1,729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.02 : 1,748.12 = 1,244.52 : x
  2. Step 2: Convert to fraction form
    1,258.02/1,748.12 = 1,244.52/x
  3. Step 3: Cross multiply
    1,258.02x = 1,748.12 × 1,244.52
  4. Step 4: Simplify right side
    1,258.02x = 2,175,564.08
  5. Step 5: Solve for x
    x = 2,175,564.08/1,258.02
  6. Step 6: Final answer
    x = 1,729.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.