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Finding the Fourth Proportional to 672.32, 925.56 and 580.28

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Solution

The fourth proportional to 672.32, 925.56 and 580.28 is: 798.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.32 : 925.56 = 580.28 : x
  2. Step 2: Convert to fraction form
    672.32/925.56 = 580.28/x
  3. Step 3: Cross multiply
    672.32x = 925.56 × 580.28
  4. Step 4: Simplify right side
    672.32x = 537,079.33
  5. Step 5: Solve for x
    x = 537,079.33/672.32
  6. Step 6: Final answer
    x = 798.85

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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.