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Finding the Fourth Proportional to 606.76, 837.21 and 385.54

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Solution

The fourth proportional to 606.76, 837.21 and 385.54 is: 531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.76 : 837.21 = 385.54 : x
  2. Step 2: Convert to fraction form
    606.76/837.21 = 385.54/x
  3. Step 3: Cross multiply
    606.76x = 837.21 × 385.54
  4. Step 4: Simplify right side
    606.76x = 322,777.94
  5. Step 5: Solve for x
    x = 322,777.94/606.76
  6. Step 6: Final answer
    x = 531.97

Related Problems

Find fourth proportional to 303.38, 418.61 and 192.77
Half scale
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Double scale
Find fourth proportional to 607.76, 838.59 and 386.54
Similar ratio
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1.5x scale

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.