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Finding the Fourth Proportional to 480.76, 661.62 and 425.68

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Solution

The fourth proportional to 480.76, 661.62 and 425.68 is: 585.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.76 : 661.62 = 425.68 : x
  2. Step 2: Convert to fraction form
    480.76/661.62 = 425.68/x
  3. Step 3: Cross multiply
    480.76x = 661.62 × 425.68
  4. Step 4: Simplify right side
    480.76x = 281,638.40
  5. Step 5: Solve for x
    x = 281,638.40/480.76
  6. Step 6: Final answer
    x = 585.82

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Find fourth proportional to 240.38, 330.81 and 212.84
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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.