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Finding the Fourth Proportional to 864.76, 1,297.10 and 522.04

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Solution

The fourth proportional to 864.76, 1,297.10 and 522.04 is: 783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.76 : 1,297.10 = 522.04 : x
  2. Step 2: Convert to fraction form
    864.76/1,297.10 = 522.04/x
  3. Step 3: Cross multiply
    864.76x = 1,297.10 × 522.04
  4. Step 4: Simplify right side
    864.76x = 677,138.08
  5. Step 5: Solve for x
    x = 677,138.08/864.76
  6. Step 6: Final answer
    x = 783.04

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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.