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Finding the Fourth Proportional to 1,503.90, 2,251.60 and 954.72

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Solution

The fourth proportional to 1,503.90, 2,251.60 and 954.72 is: 1,429.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.90 : 2,251.60 = 954.72 : x
  2. Step 2: Convert to fraction form
    1,503.90/2,251.60 = 954.72/x
  3. Step 3: Cross multiply
    1,503.90x = 2,251.60 × 954.72
  4. Step 4: Simplify right side
    1,503.90x = 2,149,645.17
  5. Step 5: Solve for x
    x = 2,149,645.17/1,503.90
  6. Step 6: Final answer
    x = 1,429.38

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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.