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Finding the Fourth Proportional to 671.60, 1,006.14 and 382.16

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Solution

The fourth proportional to 671.60, 1,006.14 and 382.16 is: 572.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.60 : 1,006.14 = 382.16 : x
  2. Step 2: Convert to fraction form
    671.60/1,006.14 = 382.16/x
  3. Step 3: Cross multiply
    671.60x = 1,006.14 × 382.16
  4. Step 4: Simplify right side
    671.60x = 384,506.46
  5. Step 5: Solve for x
    x = 384,506.46/671.60
  6. Step 6: Final answer
    x = 572.52

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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.