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Finding the Fourth Proportional to 1,027.69, 1,541.03 and 480.13

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Solution

The fourth proportional to 1,027.69, 1,541.03 and 480.13 is: 719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.69 : 1,541.03 = 480.13 : x
  2. Step 2: Convert to fraction form
    1,027.69/1,541.03 = 480.13/x
  3. Step 3: Cross multiply
    1,027.69x = 1,541.03 × 480.13
  4. Step 4: Simplify right side
    1,027.69x = 739,888.48
  5. Step 5: Solve for x
    x = 739,888.48/1,027.69
  6. Step 6: Final answer
    x = 719.95

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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.