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Finding the Fourth Proportional to 607.48, 837.74 and 408.76

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Solution

The fourth proportional to 607.48, 837.74 and 408.76 is: 563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.48 : 837.74 = 408.76 : x
  2. Step 2: Convert to fraction form
    607.48/837.74 = 408.76/x
  3. Step 3: Cross multiply
    607.48x = 837.74 × 408.76
  4. Step 4: Simplify right side
    607.48x = 342,434.60
  5. Step 5: Solve for x
    x = 342,434.60/607.48
  6. Step 6: Final answer
    x = 563.70

Related Problems

Find fourth proportional to 303.74, 418.87 and 204.38
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Double scale
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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.