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Finding the Fourth Proportional to 931.99, 1,396.61 and 737.50

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Solution

The fourth proportional to 931.99, 1,396.61 and 737.50 is: 1,105.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    931.99 : 1,396.61 = 737.50 : x
  2. Step 2: Convert to fraction form
    931.99/1,396.61 = 737.50/x
  3. Step 3: Cross multiply
    931.99x = 1,396.61 × 737.50
  4. Step 4: Simplify right side
    931.99x = 1,029,989.20
  5. Step 5: Solve for x
    x = 1,029,989.20/931.99
  6. Step 6: Final answer
    x = 1,105.16

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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.