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Finding the Fourth Proportional to 704.70, 1,055.13 and 361.98

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Solution

The fourth proportional to 704.70, 1,055.13 and 361.98 is: 541.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.70 : 1,055.13 = 361.98 : x
  2. Step 2: Convert to fraction form
    704.70/1,055.13 = 361.98/x
  3. Step 3: Cross multiply
    704.70x = 1,055.13 × 361.98
  4. Step 4: Simplify right side
    704.70x = 381,935.96
  5. Step 5: Solve for x
    x = 381,935.96/704.70
  6. Step 6: Final answer
    x = 541.98

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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.