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Finding the Fourth Proportional to 531.99, 733.71 and 399.51

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Solution

The fourth proportional to 531.99, 733.71 and 399.51 is: 551.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.99 : 733.71 = 399.51 : x
  2. Step 2: Convert to fraction form
    531.99/733.71 = 399.51/x
  3. Step 3: Cross multiply
    531.99x = 733.71 × 399.51
  4. Step 4: Simplify right side
    531.99x = 293,124.48
  5. Step 5: Solve for x
    x = 293,124.48/531.99
  6. Step 6: Final answer
    x = 551.00

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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.