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Finding the Fourth Proportional to 1,290.84, 1,936.02 and 597.45

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Solution

The fourth proportional to 1,290.84, 1,936.02 and 597.45 is: 896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.84 : 1,936.02 = 597.45 : x
  2. Step 2: Convert to fraction form
    1,290.84/1,936.02 = 597.45/x
  3. Step 3: Cross multiply
    1,290.84x = 1,936.02 × 597.45
  4. Step 4: Simplify right side
    1,290.84x = 1,156,675.15
  5. Step 5: Solve for x
    x = 1,156,675.15/1,290.84
  6. Step 6: Final answer
    x = 896.06

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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.