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Finding the Fourth Proportional to 1,668.58, 2,501.16 and 627.86

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Solution

The fourth proportional to 1,668.58, 2,501.16 and 627.86 is: 941.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.58 : 2,501.16 = 627.86 : x
  2. Step 2: Convert to fraction form
    1,668.58/2,501.16 = 627.86/x
  3. Step 3: Cross multiply
    1,668.58x = 2,501.16 × 627.86
  4. Step 4: Simplify right side
    1,668.58x = 1,570,377.55
  5. Step 5: Solve for x
    x = 1,570,377.55/1,668.58
  6. Step 6: Final answer
    x = 941.15

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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.