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Finding the Fourth Proportional to 950.58, 1,311.86 and 531.00

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Solution

The fourth proportional to 950.58, 1,311.86 and 531.00 is: 732.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.58 : 1,311.86 = 531.00 : x
  2. Step 2: Convert to fraction form
    950.58/1,311.86 = 531.00/x
  3. Step 3: Cross multiply
    950.58x = 1,311.86 × 531.00
  4. Step 4: Simplify right side
    950.58x = 696,598.14
  5. Step 5: Solve for x
    x = 696,598.14/950.58
  6. Step 6: Final answer
    x = 732.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.