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Finding the Fourth Proportional to 1,170.34, 1,615.35 and 704.50

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Solution

The fourth proportional to 1,170.34, 1,615.35 and 704.50 is: 972.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.34 : 1,615.35 = 704.50 : x
  2. Step 2: Convert to fraction form
    1,170.34/1,615.35 = 704.50/x
  3. Step 3: Cross multiply
    1,170.34x = 1,615.35 × 704.50
  4. Step 4: Simplify right side
    1,170.34x = 1,138,014.08
  5. Step 5: Solve for x
    x = 1,138,014.08/1,170.34
  6. Step 6: Final answer
    x = 972.38

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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.