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Finding the Fourth Proportional to 1,578.92, 2,368.29 and 483.20

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Solution

The fourth proportional to 1,578.92, 2,368.29 and 483.20 is: 724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.92 : 2,368.29 = 483.20 : x
  2. Step 2: Convert to fraction form
    1,578.92/2,368.29 = 483.20/x
  3. Step 3: Cross multiply
    1,578.92x = 2,368.29 × 483.20
  4. Step 4: Simplify right side
    1,578.92x = 1,144,357.73
  5. Step 5: Solve for x
    x = 1,144,357.73/1,578.92
  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.