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Finding the Fourth Proportional to 560.22, 772.76 and 385.26

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Solution

The fourth proportional to 560.22, 772.76 and 385.26 is: 531.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.22 : 772.76 = 385.26 : x
  2. Step 2: Convert to fraction form
    560.22/772.76 = 385.26/x
  3. Step 3: Cross multiply
    560.22x = 772.76 × 385.26
  4. Step 4: Simplify right side
    560.22x = 297,711.59
  5. Step 5: Solve for x
    x = 297,711.59/560.22
  6. Step 6: Final answer
    x = 531.42

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1.5x scale

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.