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Finding the Fourth Proportional to 1,234.63, 1,703.73 and 710.83

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Solution

The fourth proportional to 1,234.63, 1,703.73 and 710.83 is: 980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234.63 : 1,703.73 = 710.83 : x
  2. Step 2: Convert to fraction form
    1,234.63/1,703.73 = 710.83/x
  3. Step 3: Cross multiply
    1,234.63x = 1,703.73 × 710.83
  4. Step 4: Simplify right side
    1,234.63x = 1,211,062.40
  5. Step 5: Solve for x
    x = 1,211,062.40/1,234.63
  6. Step 6: Final answer
    x = 980.91

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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.