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Finding the Fourth Proportional to 607.40, 837.74 and 397.34

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Solution

The fourth proportional to 607.40, 837.74 and 397.34 is: 548.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.40 : 837.74 = 397.34 : x
  2. Step 2: Convert to fraction form
    607.40/837.74 = 397.34/x
  3. Step 3: Cross multiply
    607.40x = 837.74 × 397.34
  4. Step 4: Simplify right side
    607.40x = 332,867.61
  5. Step 5: Solve for x
    x = 332,867.61/607.40
  6. Step 6: Final answer
    x = 548.02

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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.