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Finding the Fourth Proportional to 947.50, 1,308.15 and 726.03

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Solution

The fourth proportional to 947.50, 1,308.15 and 726.03 is: 1,002.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    947.50 : 1,308.15 = 726.03 : x
  2. Step 2: Convert to fraction form
    947.50/1,308.15 = 726.03/x
  3. Step 3: Cross multiply
    947.50x = 1,308.15 × 726.03
  4. Step 4: Simplify right side
    947.50x = 949,756.14
  5. Step 5: Solve for x
    x = 949,756.14/947.50
  6. Step 6: Final answer
    x = 1,002.38

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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.