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Finding the Fourth Proportional to 1,265.79, 1,896.36 and 534.06

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Solution

The fourth proportional to 1,265.79, 1,896.36 and 534.06 is: 800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.79 : 1,896.36 = 534.06 : x
  2. Step 2: Convert to fraction form
    1,265.79/1,896.36 = 534.06/x
  3. Step 3: Cross multiply
    1,265.79x = 1,896.36 × 534.06
  4. Step 4: Simplify right side
    1,265.79x = 1,012,770.02
  5. Step 5: Solve for x
    x = 1,012,770.02/1,265.79
  6. Step 6: Final answer
    x = 800.11

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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.