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Finding the Third Proportional to 368.81 and 557.06

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Solution

The third proportional to 368.81 and 557.06 is: 841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.81 : 557.06 = 557.06 : x
  2. Step 2: Convert to fraction form
    368.81/557.06 = 557.06/x
  3. Step 3: Cross multiply
    368.81x = 557.06 × 557.06
  4. Step 4: Simplify right side
    368.81x = 310,318.63
  5. Step 5: Solve for x
    x = 310,318.63/368.81
  6. Step 6: Final answer
    x = 841.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.