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Finding the Fourth Proportional to 1,671.02, 2,506.56 and 438.47

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Solution

The fourth proportional to 1,671.02, 2,506.56 and 438.47 is: 657.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.02 : 2,506.56 = 438.47 : x
  2. Step 2: Convert to fraction form
    1,671.02/2,506.56 = 438.47/x
  3. Step 3: Cross multiply
    1,671.02x = 2,506.56 × 438.47
  4. Step 4: Simplify right side
    1,671.02x = 1,099,051.36
  5. Step 5: Solve for x
    x = 1,099,051.36/1,671.02
  6. Step 6: Final answer
    x = 657.71

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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.