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Finding the Fourth Proportional to 675.92, 1,016.12 and 555.08

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Solution

The fourth proportional to 675.92, 1,016.12 and 555.08 is: 834.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.92 : 1,016.12 = 555.08 : x
  2. Step 2: Convert to fraction form
    675.92/1,016.12 = 555.08/x
  3. Step 3: Cross multiply
    675.92x = 1,016.12 × 555.08
  4. Step 4: Simplify right side
    675.92x = 564,027.89
  5. Step 5: Solve for x
    x = 564,027.89/675.92
  6. Step 6: Final answer
    x = 834.46

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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.