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Finding the Fourth Proportional to 671.01, 1,006.61 and 630.51

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Solution

The fourth proportional to 671.01, 1,006.61 and 630.51 is: 945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.01 : 1,006.61 = 630.51 : x
  2. Step 2: Convert to fraction form
    671.01/1,006.61 = 630.51/x
  3. Step 3: Cross multiply
    671.01x = 1,006.61 × 630.51
  4. Step 4: Simplify right side
    671.01x = 634,674.52
  5. Step 5: Solve for x
    x = 634,674.52/671.01
  6. Step 6: Final answer
    x = 945.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.