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Finding the Fourth Proportional to 1,591.50, 2,387.25 and 437.25

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Solution

The fourth proportional to 1,591.50, 2,387.25 and 437.25 is: 655.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.50 : 2,387.25 = 437.25 : x
  2. Step 2: Convert to fraction form
    1,591.50/2,387.25 = 437.25/x
  3. Step 3: Cross multiply
    1,591.50x = 2,387.25 × 437.25
  4. Step 4: Simplify right side
    1,591.50x = 1,043,825.06
  5. Step 5: Solve for x
    x = 1,043,825.06/1,591.50
  6. Step 6: Final answer
    x = 655.88

Related Problems

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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.