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Finding the Fourth Proportional to 440.28, 606.96 and 284.76

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Solution

The fourth proportional to 440.28, 606.96 and 284.76 is: 392.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.28 : 606.96 = 284.76 : x
  2. Step 2: Convert to fraction form
    440.28/606.96 = 284.76/x
  3. Step 3: Cross multiply
    440.28x = 606.96 × 284.76
  4. Step 4: Simplify right side
    440.28x = 172,837.93
  5. Step 5: Solve for x
    x = 172,837.93/440.28
  6. Step 6: Final answer
    x = 392.56

Related Problems

Find fourth proportional to 220.14, 303.48 and 142.38
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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.