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Finding the Fourth Proportional to 984.93, 1,477.18 and 335.31

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Solution

The fourth proportional to 984.93, 1,477.18 and 335.31 is: 502.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.93 : 1,477.18 = 335.31 : x
  2. Step 2: Convert to fraction form
    984.93/1,477.18 = 335.31/x
  3. Step 3: Cross multiply
    984.93x = 1,477.18 × 335.31
  4. Step 4: Simplify right side
    984.93x = 495,313.23
  5. Step 5: Solve for x
    x = 495,313.23/984.93
  6. Step 6: Final answer
    x = 502.89

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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.