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Finding the Fourth Proportional to 944.30, 1,302.75 and 681.74

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Solution

The fourth proportional to 944.30, 1,302.75 and 681.74 is: 940.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.30 : 1,302.75 = 681.74 : x
  2. Step 2: Convert to fraction form
    944.30/1,302.75 = 681.74/x
  3. Step 3: Cross multiply
    944.30x = 1,302.75 × 681.74
  4. Step 4: Simplify right side
    944.30x = 888,136.79
  5. Step 5: Solve for x
    x = 888,136.79/944.30
  6. Step 6: Final answer
    x = 940.52

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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.