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Finding the Fourth Proportional to 623.31, 859.86 and 540.29

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Solution

The fourth proportional to 623.31, 859.86 and 540.29 is: 745.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.31 : 859.86 = 540.29 : x
  2. Step 2: Convert to fraction form
    623.31/859.86 = 540.29/x
  3. Step 3: Cross multiply
    623.31x = 859.86 × 540.29
  4. Step 4: Simplify right side
    623.31x = 464,569.46
  5. Step 5: Solve for x
    x = 464,569.46/623.31
  6. Step 6: Final answer
    x = 745.33

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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.