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Finding the Fourth Proportional to 1,257.03, 1,885.26 and 526.41

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Solution

The fourth proportional to 1,257.03, 1,885.26 and 526.41 is: 789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.03 : 1,885.26 = 526.41 : x
  2. Step 2: Convert to fraction form
    1,257.03/1,885.26 = 526.41/x
  3. Step 3: Cross multiply
    1,257.03x = 1,885.26 × 526.41
  4. Step 4: Simplify right side
    1,257.03x = 992,419.72
  5. Step 5: Solve for x
    x = 992,419.72/1,257.03
  6. Step 6: Final answer
    x = 789.50

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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.