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Finding the Fourth Proportional to 945.16, 1,417.38 and 367.84

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Solution

The fourth proportional to 945.16, 1,417.38 and 367.84 is: 551.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.16 : 1,417.38 = 367.84 : x
  2. Step 2: Convert to fraction form
    945.16/1,417.38 = 367.84/x
  3. Step 3: Cross multiply
    945.16x = 1,417.38 × 367.84
  4. Step 4: Simplify right side
    945.16x = 521,369.06
  5. Step 5: Solve for x
    x = 521,369.06/945.16
  6. Step 6: Final answer
    x = 551.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.