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Finding the Fourth Proportional to 738.97, 1,108.23 and 270.35

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Solution

The fourth proportional to 738.97, 1,108.23 and 270.35 is: 405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.97 : 1,108.23 = 270.35 : x
  2. Step 2: Convert to fraction form
    738.97/1,108.23 = 270.35/x
  3. Step 3: Cross multiply
    738.97x = 1,108.23 × 270.35
  4. Step 4: Simplify right side
    738.97x = 299,615.34
  5. Step 5: Solve for x
    x = 299,615.34/738.97
  6. Step 6: Final answer
    x = 405.45

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.