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Finding the Fourth Proportional to 672.61, 928.61 and 533.29

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Solution

The fourth proportional to 672.61, 928.61 and 533.29 is: 736.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.61 : 928.61 = 533.29 : x
  2. Step 2: Convert to fraction form
    672.61/928.61 = 533.29/x
  3. Step 3: Cross multiply
    672.61x = 928.61 × 533.29
  4. Step 4: Simplify right side
    672.61x = 495,217.44
  5. Step 5: Solve for x
    x = 495,217.44/672.61
  6. Step 6: Final answer
    x = 736.27

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Double scale
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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.