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Finding the Fourth Proportional to 1,254, 1,881.90 and 484.68

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Solution

The fourth proportional to 1,254, 1,881.90 and 484.68 is: 727.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254 : 1,881.90 = 484.68 : x
  2. Step 2: Convert to fraction form
    1,254/1,881.90 = 484.68/x
  3. Step 3: Cross multiply
    1,254x = 1,881.90 × 484.68
  4. Step 4: Simplify right side
    1,254x = 912,119.29
  5. Step 5: Solve for x
    x = 912,119.29/1,254
  6. Step 6: Final answer
    x = 727.37

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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.