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Finding the Fourth Proportional to 562.05, 775.61 and 313.37

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Solution

The fourth proportional to 562.05, 775.61 and 313.37 is: 432.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.05 : 775.61 = 313.37 : x
  2. Step 2: Convert to fraction form
    562.05/775.61 = 313.37/x
  3. Step 3: Cross multiply
    562.05x = 775.61 × 313.37
  4. Step 4: Simplify right side
    562.05x = 243,047.46
  5. Step 5: Solve for x
    x = 243,047.46/562.05
  6. Step 6: Final answer
    x = 432.43

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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.