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Finding the Fourth Proportional to 560.86, 774.09 and 328

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Solution

The fourth proportional to 560.86, 774.09 and 328 is: 452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.86 : 774.09 = 328 : x
  2. Step 2: Convert to fraction form
    560.86/774.09 = 328/x
  3. Step 3: Cross multiply
    560.86x = 774.09 × 328
  4. Step 4: Simplify right side
    560.86x = 253,901.52
  5. Step 5: Solve for x
    x = 253,901.52/560.86
  6. Step 6: Final answer
    x = 452.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.