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Finding the Fourth Proportional to 675.87, 1,013.85 and 188.91

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Solution

The fourth proportional to 675.87, 1,013.85 and 188.91 is: 283.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.87 : 1,013.85 = 188.91 : x
  2. Step 2: Convert to fraction form
    675.87/1,013.85 = 188.91/x
  3. Step 3: Cross multiply
    675.87x = 1,013.85 × 188.91
  4. Step 4: Simplify right side
    675.87x = 191,526.40
  5. Step 5: Solve for x
    x = 191,526.40/675.87
  6. Step 6: Final answer
    x = 283.38

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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.