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Finding the Fourth Proportional to 1,077.29, 1,615.73 and 529.12

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Solution

The fourth proportional to 1,077.29, 1,615.73 and 529.12 is: 793.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.29 : 1,615.73 = 529.12 : x
  2. Step 2: Convert to fraction form
    1,077.29/1,615.73 = 529.12/x
  3. Step 3: Cross multiply
    1,077.29x = 1,615.73 × 529.12
  4. Step 4: Simplify right side
    1,077.29x = 854,915.06
  5. Step 5: Solve for x
    x = 854,915.06/1,077.29
  6. Step 6: Final answer
    x = 793.58

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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.