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Finding the Fourth Proportional to 495.21, 741.99 and 477.39

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Solution

The fourth proportional to 495.21, 741.99 and 477.39 is: 715.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.21 : 741.99 = 477.39 : x
  2. Step 2: Convert to fraction form
    495.21/741.99 = 477.39/x
  3. Step 3: Cross multiply
    495.21x = 741.99 × 477.39
  4. Step 4: Simplify right side
    495.21x = 354,218.61
  5. Step 5: Solve for x
    x = 354,218.61/495.21
  6. Step 6: Final answer
    x = 715.29

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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.