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Finding the Fourth Proportional to 934.00, 1,399.71 and 472.08

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Solution

The fourth proportional to 934.00, 1,399.71 and 472.08 is: 707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.00 : 1,399.71 = 472.08 : x
  2. Step 2: Convert to fraction form
    934.00/1,399.71 = 472.08/x
  3. Step 3: Cross multiply
    934.00x = 1,399.71 × 472.08
  4. Step 4: Simplify right side
    934.00x = 660,782.12
  5. Step 5: Solve for x
    x = 660,782.12/934.00
  6. Step 6: Final answer
    x = 707.48

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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.