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Finding the Fourth Proportional to 1,672.50, 2,508.82 and 632.40

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Solution

The fourth proportional to 1,672.50, 2,508.82 and 632.40 is: 948.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.50 : 2,508.82 = 632.40 : x
  2. Step 2: Convert to fraction form
    1,672.50/2,508.82 = 632.40/x
  3. Step 3: Cross multiply
    1,672.50x = 2,508.82 × 632.40
  4. Step 4: Simplify right side
    1,672.50x = 1,586,577.77
  5. Step 5: Solve for x
    x = 1,586,577.77/1,672.50
  6. Step 6: Final answer
    x = 948.63

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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.