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Finding the Fourth Proportional to 460.76, 635.11 and 313.61

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Solution

The fourth proportional to 460.76, 635.11 and 313.61 is: 432.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.76 : 635.11 = 313.61 : x
  2. Step 2: Convert to fraction form
    460.76/635.11 = 313.61/x
  3. Step 3: Cross multiply
    460.76x = 635.11 × 313.61
  4. Step 4: Simplify right side
    460.76x = 199,172.89
  5. Step 5: Solve for x
    x = 199,172.89/460.76
  6. Step 6: Final answer
    x = 432.28

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Find fourth proportional to 230.38, 317.55 and 156.80
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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.