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Finding the Fourth Proportional to 1,232.04, 1,700.88 and 979.47

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Solution

The fourth proportional to 1,232.04, 1,700.88 and 979.47 is: 1,352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.04 : 1,700.88 = 979.47 : x
  2. Step 2: Convert to fraction form
    1,232.04/1,700.88 = 979.47/x
  3. Step 3: Cross multiply
    1,232.04x = 1,700.88 × 979.47
  4. Step 4: Simplify right side
    1,232.04x = 1,665,960.93
  5. Step 5: Solve for x
    x = 1,665,960.93/1,232.04
  6. Step 6: Final answer
    x = 1,352.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.