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Finding the Fourth Proportional to 531.20, 732.81 and 344.75

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Solution

The fourth proportional to 531.20, 732.81 and 344.75 is: 475.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.20 : 732.81 = 344.75 : x
  2. Step 2: Convert to fraction form
    531.20/732.81 = 344.75/x
  3. Step 3: Cross multiply
    531.20x = 732.81 × 344.75
  4. Step 4: Simplify right side
    531.20x = 252,634.52
  5. Step 5: Solve for x
    x = 252,634.52/531.20
  6. Step 6: Final answer
    x = 475.59

Related Problems

Find fourth proportional to 265.60, 366.40 and 172.38
Half scale
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Double scale
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Similar ratio
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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.