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Finding the Fourth Proportional to 1,244.28, 1,717.08 and 684.72

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Solution

The fourth proportional to 1,244.28, 1,717.08 and 684.72 is: 944.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.28 : 1,717.08 = 684.72 : x
  2. Step 2: Convert to fraction form
    1,244.28/1,717.08 = 684.72/x
  3. Step 3: Cross multiply
    1,244.28x = 1,717.08 × 684.72
  4. Step 4: Simplify right side
    1,244.28x = 1,175,719.02
  5. Step 5: Solve for x
    x = 1,175,719.02/1,244.28
  6. Step 6: Final answer
    x = 944.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.