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Finding the Fourth Proportional to 674.66, 930.79 and 508.51

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Solution

The fourth proportional to 674.66, 930.79 and 508.51 is: 701.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.66 : 930.79 = 508.51 : x
  2. Step 2: Convert to fraction form
    674.66/930.79 = 508.51/x
  3. Step 3: Cross multiply
    674.66x = 930.79 × 508.51
  4. Step 4: Simplify right side
    674.66x = 473,317.82
  5. Step 5: Solve for x
    x = 473,317.82/674.66
  6. Step 6: Final answer
    x = 701.56

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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.