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Finding the Fourth Proportional to 1,270.34, 1,752.99 and 798.30

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Solution

The fourth proportional to 1,270.34, 1,752.99 and 798.30 is: 1,101.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.34 : 1,752.99 = 798.30 : x
  2. Step 2: Convert to fraction form
    1,270.34/1,752.99 = 798.30/x
  3. Step 3: Cross multiply
    1,270.34x = 1,752.99 × 798.30
  4. Step 4: Simplify right side
    1,270.34x = 1,399,411.92
  5. Step 5: Solve for x
    x = 1,399,411.92/1,270.34
  6. Step 6: Final answer
    x = 1,101.61

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1.5x scale

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.