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Finding the Fourth Proportional to 1,671.06, 2,507.16 and 631.36

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Solution

The fourth proportional to 1,671.06, 2,507.16 and 631.36 is: 947.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.06 : 2,507.16 = 631.36 : x
  2. Step 2: Convert to fraction form
    1,671.06/2,507.16 = 631.36/x
  3. Step 3: Cross multiply
    1,671.06x = 2,507.16 × 631.36
  4. Step 4: Simplify right side
    1,671.06x = 1,582,920.54
  5. Step 5: Solve for x
    x = 1,582,920.54/1,671.06
  6. Step 6: Final answer
    x = 947.26

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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.