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Finding the Fourth Proportional to 1,270.03, 1,752.53 and 710.43

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Solution

The fourth proportional to 1,270.03, 1,752.53 and 710.43 is: 980.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.03 : 1,752.53 = 710.43 : x
  2. Step 2: Convert to fraction form
    1,270.03/1,752.53 = 710.43/x
  3. Step 3: Cross multiply
    1,270.03x = 1,752.53 × 710.43
  4. Step 4: Simplify right side
    1,270.03x = 1,245,049.89
  5. Step 5: Solve for x
    x = 1,245,049.89/1,270.03
  6. Step 6: Final answer
    x = 980.33

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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.