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Finding the Fourth Proportional to 934.76, 1,402.81 and 627.20

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Solution

The fourth proportional to 934.76, 1,402.81 and 627.20 is: 941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.76 : 1,402.81 = 627.20 : x
  2. Step 2: Convert to fraction form
    934.76/1,402.81 = 627.20/x
  3. Step 3: Cross multiply
    934.76x = 1,402.81 × 627.20
  4. Step 4: Simplify right side
    934.76x = 879,842.43
  5. Step 5: Solve for x
    x = 879,842.43/934.76
  6. Step 6: Final answer
    x = 941.25

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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.