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Finding the Fourth Proportional to 934.71, 1,289.03 and 738.69

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Solution

The fourth proportional to 934.71, 1,289.03 and 738.69 is: 1,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.71 : 1,289.03 = 738.69 : x
  2. Step 2: Convert to fraction form
    934.71/1,289.03 = 738.69/x
  3. Step 3: Cross multiply
    934.71x = 1,289.03 × 738.69
  4. Step 4: Simplify right side
    934.71x = 952,189.88
  5. Step 5: Solve for x
    x = 952,189.88/934.71
  6. Step 6: Final answer
    x = 1,018.70

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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.