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Finding the Fourth Proportional to 934.62, 1,400.37 and 637.70

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Solution

The fourth proportional to 934.62, 1,400.37 and 637.70 is: 955.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.62 : 1,400.37 = 637.70 : x
  2. Step 2: Convert to fraction form
    934.62/1,400.37 = 637.70/x
  3. Step 3: Cross multiply
    934.62x = 1,400.37 × 637.70
  4. Step 4: Simplify right side
    934.62x = 893,008.95
  5. Step 5: Solve for x
    x = 893,008.95/934.62
  6. Step 6: Final answer
    x = 955.48

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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.