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Finding the Fourth Proportional to 1,558.74, 2,339.48 and 634.30

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Solution

The fourth proportional to 1,558.74, 2,339.48 and 634.30 is: 952.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.74 : 2,339.48 = 634.30 : x
  2. Step 2: Convert to fraction form
    1,558.74/2,339.48 = 634.30/x
  3. Step 3: Cross multiply
    1,558.74x = 2,339.48 × 634.30
  4. Step 4: Simplify right side
    1,558.74x = 1,483,927.90
  5. Step 5: Solve for x
    x = 1,483,927.90/1,558.74
  6. Step 6: Final answer
    x = 952.00

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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.