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Finding the Fourth Proportional to 606.76, 837.40 and 344.75

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Solution

The fourth proportional to 606.76, 837.40 and 344.75 is: 475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.76 : 837.40 = 344.75 : x
  2. Step 2: Convert to fraction form
    606.76/837.40 = 344.75/x
  3. Step 3: Cross multiply
    606.76x = 837.40 × 344.75
  4. Step 4: Simplify right side
    606.76x = 288,693.65
  5. Step 5: Solve for x
    x = 288,693.65/606.76
  6. Step 6: Final answer
    x = 475.80

Related Problems

Find fourth proportional to 303.38, 418.70 and 172.38
Half scale
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Double scale
Find fourth proportional to 607.76, 838.78 and 345.75
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.