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Finding the Third Proportional to 384.66 and 841.31

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Solution

The third proportional to 384.66 and 841.31 is: 1,840.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.66 : 841.31 = 841.31 : x
  2. Step 2: Convert to fraction form
    384.66/841.31 = 841.31/x
  3. Step 3: Cross multiply
    384.66x = 841.31 × 841.31
  4. Step 4: Simplify right side
    384.66x = 707,806.72
  5. Step 5: Solve for x
    x = 707,806.72/384.66
  6. Step 6: Final answer
    x = 1,840.10

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.