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Finding the Fourth Proportional to 1,517.60, 2,276.08 and 737.60

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Solution

The fourth proportional to 1,517.60, 2,276.08 and 737.60 is: 1,106.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.60 : 2,276.08 = 737.60 : x
  2. Step 2: Convert to fraction form
    1,517.60/2,276.08 = 737.60/x
  3. Step 3: Cross multiply
    1,517.60x = 2,276.08 × 737.60
  4. Step 4: Simplify right side
    1,517.60x = 1,678,836.61
  5. Step 5: Solve for x
    x = 1,678,836.61/1,517.60
  6. Step 6: Final answer
    x = 1,106.24

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1.5x scale

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.