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Finding the Fourth Proportional to 531.44, 731.38 and 437.82

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Solution

The fourth proportional to 531.44, 731.38 and 437.82 is: 602.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.44 : 731.38 = 437.82 : x
  2. Step 2: Convert to fraction form
    531.44/731.38 = 437.82/x
  3. Step 3: Cross multiply
    531.44x = 731.38 × 437.82
  4. Step 4: Simplify right side
    531.44x = 320,213.89
  5. Step 5: Solve for x
    x = 320,213.89/531.44
  6. Step 6: Final answer
    x = 602.54

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Double scale
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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.