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Finding the Fourth Proportional to 677.04, 934.38 and 428.37

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Solution

The fourth proportional to 677.04, 934.38 and 428.37 is: 591.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.04 : 934.38 = 428.37 : x
  2. Step 2: Convert to fraction form
    677.04/934.38 = 428.37/x
  3. Step 3: Cross multiply
    677.04x = 934.38 × 428.37
  4. Step 4: Simplify right side
    677.04x = 400,260.36
  5. Step 5: Solve for x
    x = 400,260.36/677.04
  6. Step 6: Final answer
    x = 591.19

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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.