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Finding the Fourth Proportional to 575.19, 793.76 and 313.21

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Solution

The fourth proportional to 575.19, 793.76 and 313.21 is: 432.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.19 : 793.76 = 313.21 : x
  2. Step 2: Convert to fraction form
    575.19/793.76 = 313.21/x
  3. Step 3: Cross multiply
    575.19x = 793.76 × 313.21
  4. Step 4: Simplify right side
    575.19x = 248,613.57
  5. Step 5: Solve for x
    x = 248,613.57/575.19
  6. Step 6: Final answer
    x = 432.23

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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.