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Finding the Fourth Proportional to 677.80, 928.49 and 675.88

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Solution

The fourth proportional to 677.80, 928.49 and 675.88 is: 925.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.80 : 928.49 = 675.88 : x
  2. Step 2: Convert to fraction form
    677.80/928.49 = 675.88/x
  3. Step 3: Cross multiply
    677.80x = 928.49 × 675.88
  4. Step 4: Simplify right side
    677.80x = 627,547.82
  5. Step 5: Solve for x
    x = 627,547.82/677.80
  6. Step 6: Final answer
    x = 925.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.