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Finding the Fourth Proportional to 953.67, 1,318.47 and 704.59

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Solution

The fourth proportional to 953.67, 1,318.47 and 704.59 is: 974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.67 : 1,318.47 = 704.59 : x
  2. Step 2: Convert to fraction form
    953.67/1,318.47 = 704.59/x
  3. Step 3: Cross multiply
    953.67x = 1,318.47 × 704.59
  4. Step 4: Simplify right side
    953.67x = 928,977.25
  5. Step 5: Solve for x
    x = 928,977.25/953.67
  6. Step 6: Final answer
    x = 974.11

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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.