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Finding the Fourth Proportional to 606.72, 837.28 and 490.08

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Solution

The fourth proportional to 606.72, 837.28 and 490.08 is: 676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.72 : 837.28 = 490.08 : x
  2. Step 2: Convert to fraction form
    606.72/837.28 = 490.08/x
  3. Step 3: Cross multiply
    606.72x = 837.28 × 490.08
  4. Step 4: Simplify right side
    606.72x = 410,334.18
  5. Step 5: Solve for x
    x = 410,334.18/606.72
  6. Step 6: Final answer
    x = 676.32

Related Problems

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Half scale
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Double scale
Find fourth proportional to 607.72, 838.66 and 491.08
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.