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Finding the Fourth Proportional to 848.18, 1,169.56 and 552.90

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Solution

The fourth proportional to 848.18, 1,169.56 and 552.90 is: 762.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.18 : 1,169.56 = 552.90 : x
  2. Step 2: Convert to fraction form
    848.18/1,169.56 = 552.90/x
  3. Step 3: Cross multiply
    848.18x = 1,169.56 × 552.90
  4. Step 4: Simplify right side
    848.18x = 646,649.72
  5. Step 5: Solve for x
    x = 646,649.72/848.18
  6. Step 6: Final answer
    x = 762.40

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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.