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Finding the Fourth Proportional to 672.20, 928.04 and 436.24

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Solution

The fourth proportional to 672.20, 928.04 and 436.24 is: 602.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.20 : 928.04 = 436.24 : x
  2. Step 2: Convert to fraction form
    672.20/928.04 = 436.24/x
  3. Step 3: Cross multiply
    672.20x = 928.04 × 436.24
  4. Step 4: Simplify right side
    672.20x = 404,848.17
  5. Step 5: Solve for x
    x = 404,848.17/672.20
  6. Step 6: Final answer
    x = 602.27

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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.