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Finding the Fourth Proportional to 651.17, 976.20 and 445.23

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Solution

The fourth proportional to 651.17, 976.20 and 445.23 is: 667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.17 : 976.20 = 445.23 : x
  2. Step 2: Convert to fraction form
    651.17/976.20 = 445.23/x
  3. Step 3: Cross multiply
    651.17x = 976.20 × 445.23
  4. Step 4: Simplify right side
    651.17x = 434,633.53
  5. Step 5: Solve for x
    x = 434,633.53/651.17
  6. Step 6: Final answer
    x = 667.47

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Double scale
Find fourth proportional to 652.17, 977.70 and 446.23
Similar ratio
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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.