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Finding the Fourth Proportional to 1,261.62, 1,740.69 and 737.55

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Solution

The fourth proportional to 1,261.62, 1,740.69 and 737.55 is: 1,017.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.62 : 1,740.69 = 737.55 : x
  2. Step 2: Convert to fraction form
    1,261.62/1,740.69 = 737.55/x
  3. Step 3: Cross multiply
    1,261.62x = 1,740.69 × 737.55
  4. Step 4: Simplify right side
    1,261.62x = 1,283,845.91
  5. Step 5: Solve for x
    x = 1,283,845.91/1,261.62
  6. Step 6: Final answer
    x = 1,017.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.