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Finding the Fourth Proportional to 673.80, 925.46 and 657.60

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Solution

The fourth proportional to 673.80, 925.46 and 657.60 is: 903.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.80 : 925.46 = 657.60 : x
  2. Step 2: Convert to fraction form
    673.80/925.46 = 657.60/x
  3. Step 3: Cross multiply
    673.80x = 925.46 × 657.60
  4. Step 4: Simplify right side
    673.80x = 608,582.50
  5. Step 5: Solve for x
    x = 608,582.50/673.80
  6. Step 6: Final answer
    x = 903.21

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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.