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Finding the Fourth Proportional to 675.73, 1,013.78 and 571.93

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Solution

The fourth proportional to 675.73, 1,013.78 and 571.93 is: 858.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.73 : 1,013.78 = 571.93 : x
  2. Step 2: Convert to fraction form
    675.73/1,013.78 = 571.93/x
  3. Step 3: Cross multiply
    675.73x = 1,013.78 × 571.93
  4. Step 4: Simplify right side
    675.73x = 579,811.20
  5. Step 5: Solve for x
    x = 579,811.20/675.73
  6. Step 6: Final answer
    x = 858.05

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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.