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Finding the Fourth Proportional to 1,079.02, 1,619.13 and 462.66

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Solution

The fourth proportional to 1,079.02, 1,619.13 and 462.66 is: 694.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.02 : 1,619.13 = 462.66 : x
  2. Step 2: Convert to fraction form
    1,079.02/1,619.13 = 462.66/x
  3. Step 3: Cross multiply
    1,079.02x = 1,619.13 × 462.66
  4. Step 4: Simplify right side
    1,079.02x = 749,106.69
  5. Step 5: Solve for x
    x = 749,106.69/1,079.02
  6. Step 6: Final answer
    x = 694.25

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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.