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Finding the Fourth Proportional to 1,302.61, 1,954.63 and 480.77

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Solution

The fourth proportional to 1,302.61, 1,954.63 and 480.77 is: 721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.61 : 1,954.63 = 480.77 : x
  2. Step 2: Convert to fraction form
    1,302.61/1,954.63 = 480.77/x
  3. Step 3: Cross multiply
    1,302.61x = 1,954.63 × 480.77
  4. Step 4: Simplify right side
    1,302.61x = 939,727.47
  5. Step 5: Solve for x
    x = 939,727.47/1,302.61
  6. Step 6: Final answer
    x = 721.42

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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.