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Finding the Fourth Proportional to 537.01, 740.45 and 405.79

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Solution

The fourth proportional to 537.01, 740.45 and 405.79 is: 559.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.01 : 740.45 = 405.79 : x
  2. Step 2: Convert to fraction form
    537.01/740.45 = 405.79/x
  3. Step 3: Cross multiply
    537.01x = 740.45 × 405.79
  4. Step 4: Simplify right side
    537.01x = 300,467.21
  5. Step 5: Solve for x
    x = 300,467.21/537.01
  6. Step 6: Final answer
    x = 559.52

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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.