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Finding the Fourth Proportional to 1,051.14, 1,576.58 and 357.86

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Solution

The fourth proportional to 1,051.14, 1,576.58 and 357.86 is: 536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.14 : 1,576.58 = 357.86 : x
  2. Step 2: Convert to fraction form
    1,051.14/1,576.58 = 357.86/x
  3. Step 3: Cross multiply
    1,051.14x = 1,576.58 × 357.86
  4. Step 4: Simplify right side
    1,051.14x = 564,185.25
  5. Step 5: Solve for x
    x = 564,185.25/1,051.14
  6. Step 6: Final answer
    x = 536.74

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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.