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Finding the Fourth Proportional to 672.17, 925.47 and 610.65

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Solution

The fourth proportional to 672.17, 925.47 and 610.65 is: 840.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.17 : 925.47 = 610.65 : x
  2. Step 2: Convert to fraction form
    672.17/925.47 = 610.65/x
  3. Step 3: Cross multiply
    672.17x = 925.47 × 610.65
  4. Step 4: Simplify right side
    672.17x = 565,138.26
  5. Step 5: Solve for x
    x = 565,138.26/672.17
  6. Step 6: Final answer
    x = 840.77

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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.