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Finding the Fourth Proportional to 620.70, 934.20 and 467.40

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Solution

The fourth proportional to 620.70, 934.20 and 467.40 is: 703.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.70 : 934.20 = 467.40 : x
  2. Step 2: Convert to fraction form
    620.70/934.20 = 467.40/x
  3. Step 3: Cross multiply
    620.70x = 934.20 × 467.40
  4. Step 4: Simplify right side
    620.70x = 436,645.08
  5. Step 5: Solve for x
    x = 436,645.08/620.70
  6. Step 6: Final answer
    x = 703.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.