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Finding the Fourth Proportional to 754.57, 1,130.26 and 523.90

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Solution

The fourth proportional to 754.57, 1,130.26 and 523.90 is: 784.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.57 : 1,130.26 = 523.90 : x
  2. Step 2: Convert to fraction form
    754.57/1,130.26 = 523.90/x
  3. Step 3: Cross multiply
    754.57x = 1,130.26 × 523.90
  4. Step 4: Simplify right side
    754.57x = 592,145.77
  5. Step 5: Solve for x
    x = 592,145.77/754.57
  6. Step 6: Final answer
    x = 784.75

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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.