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Finding the Fourth Proportional to 1,136.45, 1,568.28 and 694.35

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Solution

The fourth proportional to 1,136.45, 1,568.28 and 694.35 is: 958.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.45 : 1,568.28 = 694.35 : x
  2. Step 2: Convert to fraction form
    1,136.45/1,568.28 = 694.35/x
  3. Step 3: Cross multiply
    1,136.45x = 1,568.28 × 694.35
  4. Step 4: Simplify right side
    1,136.45x = 1,088,931.75
  5. Step 5: Solve for x
    x = 1,088,931.75/1,136.45
  6. Step 6: Final answer
    x = 958.19

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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.