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Finding the Fourth Proportional to 674.84, 931.23 and 380.06

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Solution

The fourth proportional to 674.84, 931.23 and 380.06 is: 524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.84 : 931.23 = 380.06 : x
  2. Step 2: Convert to fraction form
    674.84/931.23 = 380.06/x
  3. Step 3: Cross multiply
    674.84x = 931.23 × 380.06
  4. Step 4: Simplify right side
    674.84x = 353,918.62
  5. Step 5: Solve for x
    x = 353,918.62/674.84
  6. Step 6: Final answer
    x = 524.45

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1.5x scale

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.