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Finding the Third Proportional to 897.38 and 1,385.63

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Solution

The third proportional to 897.38 and 1,385.63 is: 2,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.38 : 1,385.63 = 1,385.63 : x
  2. Step 2: Convert to fraction form
    897.38/1,385.63 = 1,385.63/x
  3. Step 3: Cross multiply
    897.38x = 1,385.63 × 1,385.63
  4. Step 4: Simplify right side
    897.38x = 1,919,956.64
  5. Step 5: Solve for x
    x = 1,919,956.64/897.38
  6. Step 6: Final answer
    x = 2,139.53

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.