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Finding the Fourth Proportional to 1,527.54, 2,291.42 and 487.61

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Solution

The fourth proportional to 1,527.54, 2,291.42 and 487.61 is: 731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.54 : 2,291.42 = 487.61 : x
  2. Step 2: Convert to fraction form
    1,527.54/2,291.42 = 487.61/x
  3. Step 3: Cross multiply
    1,527.54x = 2,291.42 × 487.61
  4. Step 4: Simplify right side
    1,527.54x = 1,117,305.41
  5. Step 5: Solve for x
    x = 1,117,305.41/1,527.54
  6. Step 6: Final answer
    x = 731.44

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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.