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Finding the Fourth Proportional to 671.02, 932.20 and 665.01

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Solution

The fourth proportional to 671.02, 932.20 and 665.01 is: 923.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.02 : 932.20 = 665.01 : x
  2. Step 2: Convert to fraction form
    671.02/932.20 = 665.01/x
  3. Step 3: Cross multiply
    671.02x = 932.20 × 665.01
  4. Step 4: Simplify right side
    671.02x = 619,920.66
  5. Step 5: Solve for x
    x = 619,920.66/671.02
  6. Step 6: Final answer
    x = 923.85

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.