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Finding the Fourth Proportional to 671.23, 925.44 and 434.76

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Solution

The fourth proportional to 671.23, 925.44 and 434.76 is: 599.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.23 : 925.44 = 434.76 : x
  2. Step 2: Convert to fraction form
    671.23/925.44 = 434.76/x
  3. Step 3: Cross multiply
    671.23x = 925.44 × 434.76
  4. Step 4: Simplify right side
    671.23x = 402,344.29
  5. Step 5: Solve for x
    x = 402,344.29/671.23
  6. Step 6: Final answer
    x = 599.41

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Half scale
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Double scale
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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.