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Finding the Fourth Proportional to 848.81, 1,171.55 and 517.25

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Solution

The fourth proportional to 848.81, 1,171.55 and 517.25 is: 713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.81 : 1,171.55 = 517.25 : x
  2. Step 2: Convert to fraction form
    848.81/1,171.55 = 517.25/x
  3. Step 3: Cross multiply
    848.81x = 1,171.55 × 517.25
  4. Step 4: Simplify right side
    848.81x = 605,984.24
  5. Step 5: Solve for x
    x = 605,984.24/848.81
  6. Step 6: Final answer
    x = 713.92

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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.