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Finding the Fourth Proportional to 1,158.49, 1,737.75 and 378.49

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Solution

The fourth proportional to 1,158.49, 1,737.75 and 378.49 is: 567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.49 : 1,737.75 = 378.49 : x
  2. Step 2: Convert to fraction form
    1,158.49/1,737.75 = 378.49/x
  3. Step 3: Cross multiply
    1,158.49x = 1,737.75 × 378.49
  4. Step 4: Simplify right side
    1,158.49x = 657,724.59
  5. Step 5: Solve for x
    x = 657,724.59/1,158.49
  6. Step 6: Final answer
    x = 567.74

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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.