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Finding the Fourth Proportional to 1,654.32, 2,479.84 and 1,069.22

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Solution

The fourth proportional to 1,654.32, 2,479.84 and 1,069.22 is: 1,602.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.32 : 2,479.84 = 1,069.22 : x
  2. Step 2: Convert to fraction form
    1,654.32/2,479.84 = 1,069.22/x
  3. Step 3: Cross multiply
    1,654.32x = 2,479.84 × 1,069.22
  4. Step 4: Simplify right side
    1,654.32x = 2,651,494.52
  5. Step 5: Solve for x
    x = 2,651,494.52/1,654.32
  6. Step 6: Final answer
    x = 1,602.77

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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.