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Finding the Fourth Proportional to 672.87, 925.98 and 653.84

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Solution

The fourth proportional to 672.87, 925.98 and 653.84 is: 899.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.87 : 925.98 = 653.84 : x
  2. Step 2: Convert to fraction form
    672.87/925.98 = 653.84/x
  3. Step 3: Cross multiply
    672.87x = 925.98 × 653.84
  4. Step 4: Simplify right side
    672.87x = 605,442.83
  5. Step 5: Solve for x
    x = 605,442.83/672.87
  6. Step 6: Final answer
    x = 899.79

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1.5x scale

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.