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Finding the Fourth Proportional to 927.80, 1,301.35 and 927.80

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Solution

The fourth proportional to 927.80, 1,301.35 and 927.80 is: 1,301.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.80 : 1,301.35 = 927.80 : x
  2. Step 2: Convert to fraction form
    927.80/1,301.35 = 927.80/x
  3. Step 3: Cross multiply
    927.80x = 1,301.35 × 927.80
  4. Step 4: Simplify right side
    927.80x = 1,207,392.53
  5. Step 5: Solve for x
    x = 1,207,392.53/927.80
  6. Step 6: Final answer
    x = 1,301.35

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.