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Finding the Fourth Proportional to 1,045.32, 1,568.69 and 361.32

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Solution

The fourth proportional to 1,045.32, 1,568.69 and 361.32 is: 542.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.32 : 1,568.69 = 361.32 : x
  2. Step 2: Convert to fraction form
    1,045.32/1,568.69 = 361.32/x
  3. Step 3: Cross multiply
    1,045.32x = 1,568.69 × 361.32
  4. Step 4: Simplify right side
    1,045.32x = 566,791.23
  5. Step 5: Solve for x
    x = 566,791.23/1,045.32
  6. Step 6: Final answer
    x = 542.22

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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.