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Finding the Fourth Proportional to 670.13, 925.25 and 545.60

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Solution

The fourth proportional to 670.13, 925.25 and 545.60 is: 753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.13 : 925.25 = 545.60 : x
  2. Step 2: Convert to fraction form
    670.13/925.25 = 545.60/x
  3. Step 3: Cross multiply
    670.13x = 925.25 × 545.60
  4. Step 4: Simplify right side
    670.13x = 504,816.40
  5. Step 5: Solve for x
    x = 504,816.40/670.13
  6. Step 6: Final answer
    x = 753.31

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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.