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Finding the Fourth Proportional to 701.12, 1,051.90 and 238.90

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Solution

The fourth proportional to 701.12, 1,051.90 and 238.90 is: 358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.12 : 1,051.90 = 238.90 : x
  2. Step 2: Convert to fraction form
    701.12/1,051.90 = 238.90/x
  3. Step 3: Cross multiply
    701.12x = 1,051.90 × 238.90
  4. Step 4: Simplify right side
    701.12x = 251,298.91
  5. Step 5: Solve for x
    x = 251,298.91/701.12
  6. Step 6: Final answer
    x = 358.42

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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.