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Finding the Fourth Proportional to 754.42, 1,130.41 and 522.50

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Solution

The fourth proportional to 754.42, 1,130.41 and 522.50 is: 782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.42 : 1,130.41 = 522.50 : x
  2. Step 2: Convert to fraction form
    754.42/1,130.41 = 522.50/x
  3. Step 3: Cross multiply
    754.42x = 1,130.41 × 522.50
  4. Step 4: Simplify right side
    754.42x = 590,639.23
  5. Step 5: Solve for x
    x = 590,639.23/754.42
  6. Step 6: Final answer
    x = 782.91

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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.