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Finding the Fourth Proportional to 1,270.11, 1,752.84 and 710.63

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Solution

The fourth proportional to 1,270.11, 1,752.84 and 710.63 is: 980.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.11 : 1,752.84 = 710.63 : x
  2. Step 2: Convert to fraction form
    1,270.11/1,752.84 = 710.63/x
  3. Step 3: Cross multiply
    1,270.11x = 1,752.84 × 710.63
  4. Step 4: Simplify right side
    1,270.11x = 1,245,611.93
  5. Step 5: Solve for x
    x = 1,245,611.93/1,270.11
  6. Step 6: Final answer
    x = 980.71

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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.