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Finding the Fourth Proportional to 705.37, 972.34 and 508.81

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Solution

The fourth proportional to 705.37, 972.34 and 508.81 is: 701.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.37 : 972.34 = 508.81 : x
  2. Step 2: Convert to fraction form
    705.37/972.34 = 508.81/x
  3. Step 3: Cross multiply
    705.37x = 972.34 × 508.81
  4. Step 4: Simplify right side
    705.37x = 494,736.32
  5. Step 5: Solve for x
    x = 494,736.32/705.37
  6. Step 6: Final answer
    x = 701.39

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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.