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Finding the Fourth Proportional to 944.79, 1,418.06 and 482.88

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Solution

The fourth proportional to 944.79, 1,418.06 and 482.88 is: 724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.79 : 1,418.06 = 482.88 : x
  2. Step 2: Convert to fraction form
    944.79/1,418.06 = 482.88/x
  3. Step 3: Cross multiply
    944.79x = 1,418.06 × 482.88
  4. Step 4: Simplify right side
    944.79x = 684,752.81
  5. Step 5: Solve for x
    x = 684,752.81/944.79
  6. Step 6: Final answer
    x = 724.77

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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.