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Finding the Fourth Proportional to 1,302.46, 1,953.66 and 480.70

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Solution

The fourth proportional to 1,302.46, 1,953.66 and 480.70 is: 721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.46 : 1,953.66 = 480.70 : x
  2. Step 2: Convert to fraction form
    1,302.46/1,953.66 = 480.70/x
  3. Step 3: Cross multiply
    1,302.46x = 1,953.66 × 480.70
  4. Step 4: Simplify right side
    1,302.46x = 939,124.36
  5. Step 5: Solve for x
    x = 939,124.36/1,302.46
  6. Step 6: Final answer
    x = 721.04

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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.