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Finding the Fourth Proportional to 1,002.33, 1,382.40 and 766.35

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Solution

The fourth proportional to 1,002.33, 1,382.40 and 766.35 is: 1,056.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002.33 : 1,382.40 = 766.35 : x
  2. Step 2: Convert to fraction form
    1,002.33/1,382.40 = 766.35/x
  3. Step 3: Cross multiply
    1,002.33x = 1,382.40 × 766.35
  4. Step 4: Simplify right side
    1,002.33x = 1,059,402.24
  5. Step 5: Solve for x
    x = 1,059,402.24/1,002.33
  6. Step 6: Final answer
    x = 1,056.94

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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.