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Finding the Fourth Proportional to 1,124.04, 1,682.82 and 713.64

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Solution

The fourth proportional to 1,124.04, 1,682.82 and 713.64 is: 1,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.04 : 1,682.82 = 713.64 : x
  2. Step 2: Convert to fraction form
    1,124.04/1,682.82 = 713.64/x
  3. Step 3: Cross multiply
    1,124.04x = 1,682.82 × 713.64
  4. Step 4: Simplify right side
    1,124.04x = 1,200,927.66
  5. Step 5: Solve for x
    x = 1,200,927.66/1,124.04
  6. Step 6: Final answer
    x = 1,068.40

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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.