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Finding the Fourth Proportional to 1,246.59, 1,720.02 and 848.55

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Solution

The fourth proportional to 1,246.59, 1,720.02 and 848.55 is: 1,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.59 : 1,720.02 = 848.55 : x
  2. Step 2: Convert to fraction form
    1,246.59/1,720.02 = 848.55/x
  3. Step 3: Cross multiply
    1,246.59x = 1,720.02 × 848.55
  4. Step 4: Simplify right side
    1,246.59x = 1,459,522.97
  5. Step 5: Solve for x
    x = 1,459,522.97/1,246.59
  6. Step 6: Final answer
    x = 1,170.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.