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Finding the Fourth Proportional to 501.41, 753.12 and 386.39

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Solution

The fourth proportional to 501.41, 753.12 and 386.39 is: 580.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.41 : 753.12 = 386.39 : x
  2. Step 2: Convert to fraction form
    501.41/753.12 = 386.39/x
  3. Step 3: Cross multiply
    501.41x = 753.12 × 386.39
  4. Step 4: Simplify right side
    501.41x = 290,994.27
  5. Step 5: Solve for x
    x = 290,994.27/501.41
  6. Step 6: Final answer
    x = 580.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.