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Finding the Fourth Proportional to 677.40, 922.26 and 675.30

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Solution

The fourth proportional to 677.40, 922.26 and 675.30 is: 919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.40 : 922.26 = 675.30 : x
  2. Step 2: Convert to fraction form
    677.40/922.26 = 675.30/x
  3. Step 3: Cross multiply
    677.40x = 922.26 × 675.30
  4. Step 4: Simplify right side
    677.40x = 622,802.18
  5. Step 5: Solve for x
    x = 622,802.18/677.40
  6. Step 6: Final answer
    x = 919.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.