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Finding the Fourth Proportional to 1,074.34, 1,610.28 and 525.31

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Solution

The fourth proportional to 1,074.34, 1,610.28 and 525.31 is: 787.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.34 : 1,610.28 = 525.31 : x
  2. Step 2: Convert to fraction form
    1,074.34/1,610.28 = 525.31/x
  3. Step 3: Cross multiply
    1,074.34x = 1,610.28 × 525.31
  4. Step 4: Simplify right side
    1,074.34x = 845,896.19
  5. Step 5: Solve for x
    x = 845,896.19/1,074.34
  6. Step 6: Final answer
    x = 787.36

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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.