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Finding the Fourth Proportional to 864.52, 1,296.50 and 370.92

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Solution

The fourth proportional to 864.52, 1,296.50 and 370.92 is: 556.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.52 : 1,296.50 = 370.92 : x
  2. Step 2: Convert to fraction form
    864.52/1,296.50 = 370.92/x
  3. Step 3: Cross multiply
    864.52x = 1,296.50 × 370.92
  4. Step 4: Simplify right side
    864.52x = 480,897.78
  5. Step 5: Solve for x
    x = 480,897.78/864.52
  6. Step 6: Final answer
    x = 556.26

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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.