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Finding the Fourth Proportional to 674.16, 931.44 and 508.92

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Solution

The fourth proportional to 674.16, 931.44 and 508.92 is: 703.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.16 : 931.44 = 508.92 : x
  2. Step 2: Convert to fraction form
    674.16/931.44 = 508.92/x
  3. Step 3: Cross multiply
    674.16x = 931.44 × 508.92
  4. Step 4: Simplify right side
    674.16x = 474,028.44
  5. Step 5: Solve for x
    x = 474,028.44/674.16
  6. Step 6: Final answer
    x = 703.14

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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.