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Finding the Fourth Proportional to 624.09, 860.71 and 531.14

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Solution

The fourth proportional to 624.09, 860.71 and 531.14 is: 732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.09 : 860.71 = 531.14 : x
  2. Step 2: Convert to fraction form
    624.09/860.71 = 531.14/x
  3. Step 3: Cross multiply
    624.09x = 860.71 × 531.14
  4. Step 4: Simplify right side
    624.09x = 457,157.51
  5. Step 5: Solve for x
    x = 457,157.51/624.09
  6. Step 6: Final answer
    x = 732.52

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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.