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Finding the Fourth Proportional to 1,527.74, 2,291.82 and 487.63

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Solution

The fourth proportional to 1,527.74, 2,291.82 and 487.63 is: 731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.74 : 2,291.82 = 487.63 : x
  2. Step 2: Convert to fraction form
    1,527.74/2,291.82 = 487.63/x
  3. Step 3: Cross multiply
    1,527.74x = 2,291.82 × 487.63
  4. Step 4: Simplify right side
    1,527.74x = 1,117,546.29
  5. Step 5: Solve for x
    x = 1,117,546.29/1,527.74
  6. Step 6: Final answer
    x = 731.51

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