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Finding the Fourth Proportional to 857.96, 1,182.66 and 546.92

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Solution

The fourth proportional to 857.96, 1,182.66 and 546.92 is: 753.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.96 : 1,182.66 = 546.92 : x
  2. Step 2: Convert to fraction form
    857.96/1,182.66 = 546.92/x
  3. Step 3: Cross multiply
    857.96x = 1,182.66 × 546.92
  4. Step 4: Simplify right side
    857.96x = 646,820.41
  5. Step 5: Solve for x
    x = 646,820.41/857.96
  6. Step 6: Final answer
    x = 753.91

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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.