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Finding the Fourth Proportional to 1,178.71, 1,627.70 and 760.03

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Solution

The fourth proportional to 1,178.71, 1,627.70 and 760.03 is: 1,049.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.71 : 1,627.70 = 760.03 : x
  2. Step 2: Convert to fraction form
    1,178.71/1,627.70 = 760.03/x
  3. Step 3: Cross multiply
    1,178.71x = 1,627.70 × 760.03
  4. Step 4: Simplify right side
    1,178.71x = 1,237,092.96
  5. Step 5: Solve for x
    x = 1,237,092.96/1,178.71
  6. Step 6: Final answer
    x = 1,049.53

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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.