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Finding the Fourth Proportional to 529.23, 730.15 and 319.25

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Solution

The fourth proportional to 529.23, 730.15 and 319.25 is: 440.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.23 : 730.15 = 319.25 : x
  2. Step 2: Convert to fraction form
    529.23/730.15 = 319.25/x
  3. Step 3: Cross multiply
    529.23x = 730.15 × 319.25
  4. Step 4: Simplify right side
    529.23x = 233,103.79
  5. Step 5: Solve for x
    x = 233,103.79/529.23
  6. Step 6: Final answer
    x = 440.46

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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.