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Finding the Fourth Proportional to 1,627.34, 2,437.05 and 761.90

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Solution

The fourth proportional to 1,627.34, 2,437.05 and 761.90 is: 1,141.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.34 : 2,437.05 = 761.90 : x
  2. Step 2: Convert to fraction form
    1,627.34/2,437.05 = 761.90/x
  3. Step 3: Cross multiply
    1,627.34x = 2,437.05 × 761.90
  4. Step 4: Simplify right side
    1,627.34x = 1,856,788.40
  5. Step 5: Solve for x
    x = 1,856,788.40/1,627.34
  6. Step 6: Final answer
    x = 1,141.00

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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.