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Finding the Fourth Proportional to 617.74, 926.76 and 435.49

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Solution

The fourth proportional to 617.74, 926.76 and 435.49 is: 653.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.74 : 926.76 = 435.49 : x
  2. Step 2: Convert to fraction form
    617.74/926.76 = 435.49/x
  3. Step 3: Cross multiply
    617.74x = 926.76 × 435.49
  4. Step 4: Simplify right side
    617.74x = 403,594.03
  5. Step 5: Solve for x
    x = 403,594.03/617.74
  6. Step 6: Final answer
    x = 653.34

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.